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Finding the Fourth Proportional to 127,609.31, 191,532.38 and 64,473.78

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Solution

The fourth proportional to 127,609.31, 191,532.38 and 64,473.78 is: 96,770.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,609.31 : 191,532.38 = 64,473.78 : x
  2. Step 2: Convert to fraction form
    127,609.31/191,532.38 = 64,473.78/x
  3. Step 3: Cross multiply
    127,609.31x = 191,532.38 × 64,473.78
  4. Step 4: Simplify right side
    127,609.31x = 12,348,816,531.00
  5. Step 5: Solve for x
    x = 12,348,816,531.00/127,609.31
  6. Step 6: Final answer
    x = 96,770.50

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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.