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Finding the Fourth Proportional to 392,659.10, 588,918.54 and 104,472.40

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Solution

The fourth proportional to 392,659.10, 588,918.54 and 104,472.40 is: 156,689.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,659.10 : 588,918.54 = 104,472.40 : x
  2. Step 2: Convert to fraction form
    392,659.10/588,918.54 = 104,472.40/x
  3. Step 3: Cross multiply
    392,659.10x = 588,918.54 × 104,472.40
  4. Step 4: Simplify right side
    392,659.10x = 61,525,732,518.45
  5. Step 5: Solve for x
    x = 61,525,732,518.45/392,659.10
  6. Step 6: Final answer
    x = 156,689.94

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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.