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Finding the Fourth Proportional to 127,873.62, 176,465.82 and 71,283.78

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Solution

The fourth proportional to 127,873.62, 176,465.82 and 71,283.78 is: 98,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,873.62 : 176,465.82 = 71,283.78 : x
  2. Step 2: Convert to fraction form
    127,873.62/176,465.82 = 71,283.78/x
  3. Step 3: Cross multiply
    127,873.62x = 176,465.82 × 71,283.78
  4. Step 4: Simplify right side
    127,873.62x = 12,579,150,690.40
  5. Step 5: Solve for x
    x = 12,579,150,690.40/127,873.62
  6. Step 6: Final answer
    x = 98,371.74

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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.