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Finding the Fourth Proportional to 465,539.71, 698,295.70 and 128,600.56

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Solution

The fourth proportional to 465,539.71, 698,295.70 and 128,600.56 is: 192,897.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,539.71 : 698,295.70 = 128,600.56 : x
  2. Step 2: Convert to fraction form
    465,539.71/698,295.70 = 128,600.56/x
  3. Step 3: Cross multiply
    465,539.71x = 698,295.70 × 128,600.56
  4. Step 4: Simplify right side
    465,539.71x = 89,801,218,065.59
  5. Step 5: Solve for x
    x = 89,801,218,065.59/465,539.71
  6. Step 6: Final answer
    x = 192,897.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.