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Finding the Fourth Proportional to 924.57, 1,387.25 and 846.71

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Solution

The fourth proportional to 924.57, 1,387.25 and 846.71 is: 1,270.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    924.57 : 1,387.25 = 846.71 : x
  2. Step 2: Convert to fraction form
    924.57/1,387.25 = 846.71/x
  3. Step 3: Cross multiply
    924.57x = 1,387.25 × 846.71
  4. Step 4: Simplify right side
    924.57x = 1,174,587.28
  5. Step 5: Solve for x
    x = 1,174,587.28/924.57
  6. Step 6: Final answer
    x = 1,270.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.