Home / 39,283,203,853.78-54,210,843,065.28-21,218,719,972.66

Finding the Fourth Proportional to 39,283,203,853.78, 54,210,843,065.28 and 21,218,719,972.66

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Solution

The fourth proportional to 39,283,203,853.78, 54,210,843,065.28 and 21,218,719,972.66 is: 29,281,845,308.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,283,203,853.78 : 54,210,843,065.28 = 21,218,719,972.66 : x
  2. Step 2: Convert to fraction form
    39,283,203,853.78/54,210,843,065.28 = 21,218,719,972.66/x
  3. Step 3: Cross multiply
    39,283,203,853.78x = 54,210,843,065.28 × 21,218,719,972.66
  4. Step 4: Simplify right side
    39,283,203,853.78x = 1,150,284,698,483,993,608,192
  5. Step 5: Solve for x
    x = 1,150,284,698,483,993,608,192/39,283,203,853.78
  6. Step 6: Final answer
    x = 29,281,845,308.89

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.