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Finding the Fourth Proportional to 125,059.40, 172,581.96 and 68,470.76

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Solution

The fourth proportional to 125,059.40, 172,581.96 and 68,470.76 is: 94,489.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,059.40 : 172,581.96 = 68,470.76 : x
  2. Step 2: Convert to fraction form
    125,059.40/172,581.96 = 68,470.76/x
  3. Step 3: Cross multiply
    125,059.40x = 172,581.96 × 68,470.76
  4. Step 4: Simplify right side
    125,059.40x = 11,816,817,963.49
  5. Step 5: Solve for x
    x = 11,816,817,963.49/125,059.40
  6. Step 6: Final answer
    x = 94,489.64

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1.5x scale

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.