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Finding the Fourth Proportional to 82,690.92, 124,098.79 and 60,561.67

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Solution

The fourth proportional to 82,690.92, 124,098.79 and 60,561.67 is: 90,888.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,690.92 : 124,098.79 = 60,561.67 : x
  2. Step 2: Convert to fraction form
    82,690.92/124,098.79 = 60,561.67/x
  3. Step 3: Cross multiply
    82,690.92x = 124,098.79 × 60,561.67
  4. Step 4: Simplify right side
    82,690.92x = 7,515,629,967.38
  5. Step 5: Solve for x
    x = 7,515,629,967.38/82,690.92
  6. Step 6: Final answer
    x = 90,888.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.