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Finding the Fourth Proportional to 127,648.51, 176,154.88 and 71,073.25

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Solution

The fourth proportional to 127,648.51, 176,154.88 and 71,073.25 is: 98,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,648.51 : 176,154.88 = 71,073.25 : x
  2. Step 2: Convert to fraction form
    127,648.51/176,154.88 = 71,073.25/x
  3. Step 3: Cross multiply
    127,648.51x = 176,154.88 × 71,073.25
  4. Step 4: Simplify right side
    127,648.51x = 12,519,899,824.96
  5. Step 5: Solve for x
    x = 12,519,899,824.96/127,648.51
  6. Step 6: Final answer
    x = 98,081.05

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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.