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Finding the Fourth Proportional to 392,543.80, 588,210.90 and 292,233.40

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Solution

The fourth proportional to 392,543.80, 588,210.90 and 292,233.40 is: 437,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,543.80 : 588,210.90 = 292,233.40 : x
  2. Step 2: Convert to fraction form
    392,543.80/588,210.90 = 292,233.40/x
  3. Step 3: Cross multiply
    392,543.80x = 588,210.90 × 292,233.40
  4. Step 4: Simplify right side
    392,543.80x = 171,894,871,224.06
  5. Step 5: Solve for x
    x = 171,894,871,224.06/392,543.80
  6. Step 6: Final answer
    x = 437,899.85

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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.