Home / 38,988,165,848.70-53,803,628,065.38-21,841,139,828.40

Finding the Fourth Proportional to 38,988,165,848.70, 53,803,628,065.38 and 21,841,139,828.40

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Solution

The fourth proportional to 38,988,165,848.70, 53,803,628,065.38 and 21,841,139,828.40 is: 30,140,750,103.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,988,165,848.70 : 53,803,628,065.38 = 21,841,139,828.40 : x
  2. Step 2: Convert to fraction form
    38,988,165,848.70/53,803,628,065.38 = 21,841,139,828.40/x
  3. Step 3: Cross multiply
    38,988,165,848.70x = 53,803,628,065.38 × 21,841,139,828.40
  4. Step 4: Simplify right side
    38,988,165,848.70x = 1,175,132,563,851,191,123,968
  5. Step 5: Solve for x
    x = 1,175,132,563,851,191,123,968/38,988,165,848.70
  6. Step 6: Final answer
    x = 30,140,750,103.80

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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.