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Finding the Fourth Proportional to 372,140.40, 558,210.60 and 266,732.40

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Solution

The fourth proportional to 372,140.40, 558,210.60 and 266,732.40 is: 400,098.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,140.40 : 558,210.60 = 266,732.40 : x
  2. Step 2: Convert to fraction form
    372,140.40/558,210.60 = 266,732.40/x
  3. Step 3: Cross multiply
    372,140.40x = 558,210.60 × 266,732.40
  4. Step 4: Simplify right side
    372,140.40x = 148,892,853,043.44
  5. Step 5: Solve for x
    x = 148,892,853,043.44/372,140.40
  6. Step 6: Final answer
    x = 400,098.60

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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.