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Finding the Fourth Proportional to 318,179.81, 439,089.87 and 187,363.14

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Solution

The fourth proportional to 318,179.81, 439,089.87 and 187,363.14 is: 258,562.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,179.81 : 439,089.87 = 187,363.14 : x
  2. Step 2: Convert to fraction form
    318,179.81/439,089.87 = 187,363.14/x
  3. Step 3: Cross multiply
    318,179.81x = 439,089.87 × 187,363.14
  4. Step 4: Simplify right side
    318,179.81x = 82,269,256,785.39
  5. Step 5: Solve for x
    x = 82,269,256,785.39/318,179.81
  6. Step 6: Final answer
    x = 258,562.15

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1.5x scale

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.