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Finding the Fourth Proportional to 127,472.81, 191,068.85 and 52,551.86

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Solution

The fourth proportional to 127,472.81, 191,068.85 and 52,551.86 is: 78,769.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,472.81 : 191,068.85 = 52,551.86 : x
  2. Step 2: Convert to fraction form
    127,472.81/191,068.85 = 52,551.86/x
  3. Step 3: Cross multiply
    127,472.81x = 191,068.85 × 52,551.86
  4. Step 4: Simplify right side
    127,472.81x = 10,041,022,631.60
  5. Step 5: Solve for x
    x = 10,041,022,631.60/127,472.81
  6. Step 6: Final answer
    x = 78,769.92

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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.