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Finding the Fourth Proportional to 127,663.66, 176,164.96 and 71,080.30

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Solution

The fourth proportional to 127,663.66, 176,164.96 and 71,080.30 is: 98,084.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,663.66 : 176,164.96 = 71,080.30 : x
  2. Step 2: Convert to fraction form
    127,663.66/176,164.96 = 71,080.30/x
  3. Step 3: Cross multiply
    127,663.66x = 176,164.96 × 71,080.30
  4. Step 4: Simplify right side
    127,663.66x = 12,521,856,970.06
  5. Step 5: Solve for x
    x = 12,521,856,970.06/127,663.66
  6. Step 6: Final answer
    x = 98,084.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.