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Finding the Fourth Proportional to 527,714.63, 791,565.35 and 128,355.67

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Solution

The fourth proportional to 527,714.63, 791,565.35 and 128,355.67 is: 192,531.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,714.63 : 791,565.35 = 128,355.67 : x
  2. Step 2: Convert to fraction form
    527,714.63/791,565.35 = 128,355.67/x
  3. Step 3: Cross multiply
    527,714.63x = 791,565.35 × 128,355.67
  4. Step 4: Simplify right side
    527,714.63x = 101,601,901,195.71
  5. Step 5: Solve for x
    x = 101,601,901,195.71/527,714.63
  6. Step 6: Final answer
    x = 192,531.90

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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.