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Finding the Fourth Proportional to 125,901.54, 173,744.78 and 69,312.90

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Solution

The fourth proportional to 125,901.54, 173,744.78 and 69,312.90 is: 95,652.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,901.54 : 173,744.78 = 69,312.90 : x
  2. Step 2: Convert to fraction form
    125,901.54/173,744.78 = 69,312.90/x
  3. Step 3: Cross multiply
    125,901.54x = 173,744.78 × 69,312.90
  4. Step 4: Simplify right side
    125,901.54x = 12,042,754,561.66
  5. Step 5: Solve for x
    x = 12,042,754,561.66/125,901.54
  6. Step 6: Final answer
    x = 95,652.16

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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.