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Finding the Fourth Proportional to 111,265.92, 166,848.96 and 66,308.49

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Solution

The fourth proportional to 111,265.92, 166,848.96 and 66,308.49 is: 99,432.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,265.92 : 166,848.96 = 66,308.49 : x
  2. Step 2: Convert to fraction form
    111,265.92/166,848.96 = 66,308.49/x
  3. Step 3: Cross multiply
    111,265.92x = 166,848.96 × 66,308.49
  4. Step 4: Simplify right side
    111,265.92x = 11,063,502,595.67
  5. Step 5: Solve for x
    x = 11,063,502,595.67/111,265.92
  6. Step 6: Final answer
    x = 99,432.99

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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.