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Finding the Fourth Proportional to 287,057.04, 430,191.90 and 181,687.92

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Solution

The fourth proportional to 287,057.04, 430,191.90 and 181,687.92 is: 272,282.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,057.04 : 430,191.90 = 181,687.92 : x
  2. Step 2: Convert to fraction form
    287,057.04/430,191.90 = 181,687.92/x
  3. Step 3: Cross multiply
    287,057.04x = 430,191.90 × 181,687.92
  4. Step 4: Simplify right side
    287,057.04x = 78,160,671,511.85
  5. Step 5: Solve for x
    x = 78,160,671,511.85/287,057.04
  6. Step 6: Final answer
    x = 272,282.72

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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.