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Finding the Fourth Proportional to 558,891.67, 771,376.80 and 317,196.89

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Solution

The fourth proportional to 558,891.67, 771,376.80 and 317,196.89 is: 437,792.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,891.67 : 771,376.80 = 317,196.89 : x
  2. Step 2: Convert to fraction form
    558,891.67/771,376.80 = 317,196.89/x
  3. Step 3: Cross multiply
    558,891.67x = 771,376.80 × 317,196.89
  4. Step 4: Simplify right side
    558,891.67x = 244,678,321,978.15
  5. Step 5: Solve for x
    x = 244,678,321,978.15/558,891.67
  6. Step 6: Final answer
    x = 437,792.04

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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.