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Finding the Fourth Proportional to 1,487.82, 2,053.18 and 824.71

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Solution

The fourth proportional to 1,487.82, 2,053.18 and 824.71 is: 1,138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.82 : 2,053.18 = 824.71 : x
  2. Step 2: Convert to fraction form
    1,487.82/2,053.18 = 824.71/x
  3. Step 3: Cross multiply
    1,487.82x = 2,053.18 × 824.71
  4. Step 4: Simplify right side
    1,487.82x = 1,693,278.08
  5. Step 5: Solve for x
    x = 1,693,278.08/1,487.82
  6. Step 6: Final answer
    x = 1,138.09

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