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Finding the Fourth Proportional to 61,509.96, 92,263.32 and 17,139.78

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Solution

The fourth proportional to 61,509.96, 92,263.32 and 17,139.78 is: 25,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,509.96 : 92,263.32 = 17,139.78 : x
  2. Step 2: Convert to fraction form
    61,509.96/92,263.32 = 17,139.78/x
  3. Step 3: Cross multiply
    61,509.96x = 92,263.32 × 17,139.78
  4. Step 4: Simplify right side
    61,509.96x = 1,581,373,006.87
  5. Step 5: Solve for x
    x = 1,581,373,006.87/61,509.96
  6. Step 6: Final answer
    x = 25,709.22

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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.