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Finding the Fourth Proportional to 156,709.97, 216,259.76 and 89,641.97

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Solution

The fourth proportional to 156,709.97, 216,259.76 and 89,641.97 is: 123,705.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,709.97 : 216,259.76 = 89,641.97 : x
  2. Step 2: Convert to fraction form
    156,709.97/216,259.76 = 89,641.97/x
  3. Step 3: Cross multiply
    156,709.97x = 216,259.76 × 89,641.97
  4. Step 4: Simplify right side
    156,709.97x = 19,385,950,469.92
  5. Step 5: Solve for x
    x = 19,385,950,469.92/156,709.97
  6. Step 6: Final answer
    x = 123,705.92

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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.