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Finding the Fourth Proportional to 127,711.52, 176,241.83 and 74,027.64

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Solution

The fourth proportional to 127,711.52, 176,241.83 and 74,027.64 is: 102,158.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,711.52 : 176,241.83 = 74,027.64 : x
  2. Step 2: Convert to fraction form
    127,711.52/176,241.83 = 74,027.64/x
  3. Step 3: Cross multiply
    127,711.52x = 176,241.83 × 74,027.64
  4. Step 4: Simplify right side
    127,711.52x = 13,046,766,374.04
  5. Step 5: Solve for x
    x = 13,046,766,374.04/127,711.52
  6. Step 6: Final answer
    x = 102,158.11

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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.