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Finding the Fourth Proportional to 57,415.50, 86,124.86 and 15,862.50

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Solution

The fourth proportional to 57,415.50, 86,124.86 and 15,862.50 is: 23,794.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,415.50 : 86,124.86 = 15,862.50 : x
  2. Step 2: Convert to fraction form
    57,415.50/86,124.86 = 15,862.50/x
  3. Step 3: Cross multiply
    57,415.50x = 86,124.86 × 15,862.50
  4. Step 4: Simplify right side
    57,415.50x = 1,366,155,591.75
  5. Step 5: Solve for x
    x = 1,366,155,591.75/57,415.50
  6. Step 6: Final answer
    x = 23,794.19

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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.