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Finding the Fourth Proportional to 392,476.76, 588,802.92 and 143,158.76

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Solution

The fourth proportional to 392,476.76, 588,802.92 and 143,158.76 is: 214,770.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,476.76 : 588,802.92 = 143,158.76 : x
  2. Step 2: Convert to fraction form
    392,476.76/588,802.92 = 143,158.76/x
  3. Step 3: Cross multiply
    392,476.76x = 588,802.92 × 143,158.76
  4. Step 4: Simplify right side
    392,476.76x = 84,292,295,911.58
  5. Step 5: Solve for x
    x = 84,292,295,911.58/392,476.76
  6. Step 6: Final answer
    x = 214,770.16

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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.