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Finding the Fourth Proportional to 667,088.46, 920,575.67 and 361,157.00

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Solution

The fourth proportional to 667,088.46, 920,575.67 and 361,157.00 is: 498,393.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,088.46 : 920,575.67 = 361,157.00 : x
  2. Step 2: Convert to fraction form
    667,088.46/920,575.67 = 361,157.00/x
  3. Step 3: Cross multiply
    667,088.46x = 920,575.67 × 361,157.00
  4. Step 4: Simplify right side
    667,088.46x = 332,472,340,841.53
  5. Step 5: Solve for x
    x = 332,472,340,841.53/667,088.46
  6. Step 6: Final answer
    x = 498,393.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.