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Finding the Fourth Proportional to 1,353.68, 2,031.24 and 584

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Solution

The fourth proportional to 1,353.68, 2,031.24 and 584 is: 876.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.68 : 2,031.24 = 584 : x
  2. Step 2: Convert to fraction form
    1,353.68/2,031.24 = 584/x
  3. Step 3: Cross multiply
    1,353.68x = 2,031.24 × 584
  4. Step 4: Simplify right side
    1,353.68x = 1,186,244.16
  5. Step 5: Solve for x
    x = 1,186,244.16/1,353.68
  6. Step 6: Final answer
    x = 876.31

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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.