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Finding the Fourth Proportional to 127,930.38, 176,544.72 and 71,345.40

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Solution

The fourth proportional to 127,930.38, 176,544.72 and 71,345.40 is: 98,457.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,930.38 : 176,544.72 = 71,345.40 : x
  2. Step 2: Convert to fraction form
    127,930.38/176,544.72 = 71,345.40/x
  3. Step 3: Cross multiply
    127,930.38x = 176,544.72 × 71,345.40
  4. Step 4: Simplify right side
    127,930.38x = 12,595,653,666.29
  5. Step 5: Solve for x
    x = 12,595,653,666.29/127,930.38
  6. Step 6: Final answer
    x = 98,457.10

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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.