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Finding the Fourth Proportional to 372,164.40, 558,246.60 and 355,057.20

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Solution

The fourth proportional to 372,164.40, 558,246.60 and 355,057.20 is: 532,585.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,164.40 : 558,246.60 = 355,057.20 : x
  2. Step 2: Convert to fraction form
    372,164.40/558,246.60 = 355,057.20/x
  3. Step 3: Cross multiply
    372,164.40x = 558,246.60 × 355,057.20
  4. Step 4: Simplify right side
    372,164.40x = 198,209,474,705.52
  5. Step 5: Solve for x
    x = 198,209,474,705.52/372,164.40
  6. Step 6: Final answer
    x = 532,585.80

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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.