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Finding the Fourth Proportional to 86,414.79, 119,306.79 and 66,233.64

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Solution

The fourth proportional to 86,414.79, 119,306.79 and 66,233.64 is: 91,444.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,414.79 : 119,306.79 = 66,233.64 : x
  2. Step 2: Convert to fraction form
    86,414.79/119,306.79 = 66,233.64/x
  3. Step 3: Cross multiply
    86,414.79x = 119,306.79 × 66,233.64
  4. Step 4: Simplify right side
    86,414.79x = 7,902,122,978.42
  5. Step 5: Solve for x
    x = 7,902,122,978.42/86,414.79
  6. Step 6: Final answer
    x = 91,444.10

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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.