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Finding the Fourth Proportional to 127,732.90, 191,717.61 and 64,597.72

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Solution

The fourth proportional to 127,732.90, 191,717.61 and 64,597.72 is: 96,956.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,732.90 : 191,717.61 = 64,597.72 : x
  2. Step 2: Convert to fraction form
    127,732.90/191,717.61 = 64,597.72/x
  3. Step 3: Cross multiply
    127,732.90x = 191,717.61 × 64,597.72
  4. Step 4: Simplify right side
    127,732.90x = 12,384,520,489.85
  5. Step 5: Solve for x
    x = 12,384,520,489.85/127,732.90
  6. Step 6: Final answer
    x = 96,956.39

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1.5x scale

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.