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Finding the Fourth Proportional to 98,909.56, 147,644.84 and 91,600.12

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Solution

The fourth proportional to 98,909.56, 147,644.84 and 91,600.12 is: 136,733.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,909.56 : 147,644.84 = 91,600.12 : x
  2. Step 2: Convert to fraction form
    98,909.56/147,644.84 = 91,600.12/x
  3. Step 3: Cross multiply
    98,909.56x = 147,644.84 × 91,600.12
  4. Step 4: Simplify right side
    98,909.56x = 13,524,285,061.38
  5. Step 5: Solve for x
    x = 13,524,285,061.38/98,909.56
  6. Step 6: Final answer
    x = 136,733.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.