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Finding the Fourth Proportional to 331,432.56, 457,374.60 and 180,529.56

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Solution

The fourth proportional to 331,432.56, 457,374.60 and 180,529.56 is: 249,129.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,432.56 : 457,374.60 = 180,529.56 : x
  2. Step 2: Convert to fraction form
    331,432.56/457,374.60 = 180,529.56/x
  3. Step 3: Cross multiply
    331,432.56x = 457,374.60 × 180,529.56
  4. Step 4: Simplify right side
    331,432.56x = 82,569,635,293.18
  5. Step 5: Solve for x
    x = 82,569,635,293.18/331,432.56
  6. Step 6: Final answer
    x = 249,129.52

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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.