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Finding the Fourth Proportional to 1,592.49, 2,386.80 and 667.56

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Solution

The fourth proportional to 1,592.49, 2,386.80 and 667.56 is: 1,000.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,592.49 : 2,386.80 = 667.56 : x
  2. Step 2: Convert to fraction form
    1,592.49/2,386.80 = 667.56/x
  3. Step 3: Cross multiply
    1,592.49x = 2,386.80 × 667.56
  4. Step 4: Simplify right side
    1,592.49x = 1,593,332.21
  5. Step 5: Solve for x
    x = 1,593,332.21/1,592.49
  6. Step 6: Final answer
    x = 1,000.53

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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.