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Finding the Fourth Proportional to 127,654.74, 191,417.76 and 74,364.30

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Solution

The fourth proportional to 127,654.74, 191,417.76 and 74,364.30 is: 111,508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,654.74 : 191,417.76 = 74,364.30 : x
  2. Step 2: Convert to fraction form
    127,654.74/191,417.76 = 74,364.30/x
  3. Step 3: Cross multiply
    127,654.74x = 191,417.76 × 74,364.30
  4. Step 4: Simplify right side
    127,654.74x = 14,234,647,729.97
  5. Step 5: Solve for x
    x = 14,234,647,729.97/127,654.74
  6. Step 6: Final answer
    x = 111,508.96

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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.