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Finding the Fourth Proportional to 437,515.60, 656,273.40 and 400,117.90

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Solution

The fourth proportional to 437,515.60, 656,273.40 and 400,117.90 is: 600,176.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,515.60 : 656,273.40 = 400,117.90 : x
  2. Step 2: Convert to fraction form
    437,515.60/656,273.40 = 400,117.90/x
  3. Step 3: Cross multiply
    437,515.60x = 656,273.40 × 400,117.90
  4. Step 4: Simplify right side
    437,515.60x = 262,586,734,633.86
  5. Step 5: Solve for x
    x = 262,586,734,633.86/437,515.60
  6. Step 6: Final answer
    x = 600,176.85

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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.