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Finding the Fourth Proportional to 99,489.67, 137,292.57 and 59,194.19

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Solution

The fourth proportional to 99,489.67, 137,292.57 and 59,194.19 is: 81,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,489.67 : 137,292.57 = 59,194.19 : x
  2. Step 2: Convert to fraction form
    99,489.67/137,292.57 = 59,194.19/x
  3. Step 3: Cross multiply
    99,489.67x = 137,292.57 × 59,194.19
  4. Step 4: Simplify right side
    99,489.67x = 8,126,922,817.40
  5. Step 5: Solve for x
    x = 8,126,922,817.40/99,489.67
  6. Step 6: Final answer
    x = 81,686.10

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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.