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Finding the Fourth Proportional to 28,593,978.28, 39,460,089.64 and 15,541,233.28

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Solution

The fourth proportional to 28,593,978.28, 39,460,089.64 and 15,541,233.28 is: 21,447,119.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,593,978.28 : 39,460,089.64 = 15,541,233.28 : x
  2. Step 2: Convert to fraction form
    28,593,978.28/39,460,089.64 = 15,541,233.28/x
  3. Step 3: Cross multiply
    28,593,978.28x = 39,460,089.64 × 15,541,233.28
  4. Step 4: Simplify right side
    28,593,978.28x = 613,258,458,344,951.25
  5. Step 5: Solve for x
    x = 613,258,458,344,951.25/28,593,978.28
  6. Step 6: Final answer
    x = 21,447,119.12

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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.