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Finding the Fourth Proportional to 99,532.98, 137,311.92 and 65,497.68

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Solution

The fourth proportional to 99,532.98, 137,311.92 and 65,497.68 is: 90,358.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,532.98 : 137,311.92 = 65,497.68 : x
  2. Step 2: Convert to fraction form
    99,532.98/137,311.92 = 65,497.68/x
  3. Step 3: Cross multiply
    99,532.98x = 137,311.92 × 65,497.68
  4. Step 4: Simplify right side
    99,532.98x = 8,993,612,196.35
  5. Step 5: Solve for x
    x = 8,993,612,196.35/99,532.98
  6. Step 6: Final answer
    x = 90,358.11

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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.