Home / 38,417,185.61-53,016,133.07-21,013,148.15

Finding the Fourth Proportional to 38,417,185.61, 53,016,133.07 and 21,013,148.15

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Solution

The fourth proportional to 38,417,185.61, 53,016,133.07 and 21,013,148.15 is: 28,998,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,417,185.61 : 53,016,133.07 = 21,013,148.15 : x
  2. Step 2: Convert to fraction form
    38,417,185.61/53,016,133.07 = 21,013,148.15/x
  3. Step 3: Cross multiply
    38,417,185.61x = 53,016,133.07 × 21,013,148.15
  4. Step 4: Simplify right side
    38,417,185.61x = 1,114,035,858,434,958.50
  5. Step 5: Solve for x
    x = 1,114,035,858,434,958.50/38,417,185.61
  6. Step 6: Final answer
    x = 28,998,372.49

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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.