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Finding the Fourth Proportional to 156,601.50, 216,029.22 and 99,143.52

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Solution

The fourth proportional to 156,601.50, 216,029.22 and 99,143.52 is: 136,766.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,601.50 : 216,029.22 = 99,143.52 : x
  2. Step 2: Convert to fraction form
    156,601.50/216,029.22 = 99,143.52/x
  3. Step 3: Cross multiply
    156,601.50x = 216,029.22 × 99,143.52
  4. Step 4: Simplify right side
    156,601.50x = 21,417,897,293.65
  5. Step 5: Solve for x
    x = 21,417,897,293.65/156,601.50
  6. Step 6: Final answer
    x = 136,766.87

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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.