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Finding the Fourth Proportional to 28,593,978.43, 39,460,089.86 and 15,541,233.43

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Solution

The fourth proportional to 28,593,978.43, 39,460,089.86 and 15,541,233.43 is: 21,447,119.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,593,978.43 : 39,460,089.86 = 15,541,233.43 : x
  2. Step 2: Convert to fraction form
    28,593,978.43/39,460,089.86 = 15,541,233.43/x
  3. Step 3: Cross multiply
    28,593,978.43x = 39,460,089.86 × 15,541,233.43
  4. Step 4: Simplify right side
    28,593,978.43x = 613,258,467,683,036
  5. Step 5: Solve for x
    x = 613,258,467,683,036/28,593,978.43
  6. Step 6: Final answer
    x = 21,447,119.34

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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.