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Finding the Fourth Proportional to 118,398.90, 176,734.65 and 103,451.97

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Solution

The fourth proportional to 118,398.90, 176,734.65 and 103,451.97 is: 154,423.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,398.90 : 176,734.65 = 103,451.97 : x
  2. Step 2: Convert to fraction form
    118,398.90/176,734.65 = 103,451.97/x
  3. Step 3: Cross multiply
    118,398.90x = 176,734.65 × 103,451.97
  4. Step 4: Simplify right side
    118,398.90x = 18,283,547,709.76
  5. Step 5: Solve for x
    x = 18,283,547,709.76/118,398.90
  6. Step 6: Final answer
    x = 154,423.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.