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Finding the Fourth Proportional to 127,619.92, 191,472.51 and 56,532.90

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Solution

The fourth proportional to 127,619.92, 191,472.51 and 56,532.90 is: 84,818.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,619.92 : 191,472.51 = 56,532.90 : x
  2. Step 2: Convert to fraction form
    127,619.92/191,472.51 = 56,532.90/x
  3. Step 3: Cross multiply
    127,619.92x = 191,472.51 × 56,532.90
  4. Step 4: Simplify right side
    127,619.92x = 10,824,496,260.58
  5. Step 5: Solve for x
    x = 10,824,496,260.58/127,619.92
  6. Step 6: Final answer
    x = 84,818.23

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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.