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Finding the Fourth Proportional to 88,920.42, 133,474.60 and 86,912.52

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Solution

The fourth proportional to 88,920.42, 133,474.60 and 86,912.52 is: 130,460.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,920.42 : 133,474.60 = 86,912.52 : x
  2. Step 2: Convert to fraction form
    88,920.42/133,474.60 = 86,912.52/x
  3. Step 3: Cross multiply
    88,920.42x = 133,474.60 × 86,912.52
  4. Step 4: Simplify right side
    88,920.42x = 11,600,613,841.99
  5. Step 5: Solve for x
    x = 11,600,613,841.99/88,920.42
  6. Step 6: Final answer
    x = 130,460.63

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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.