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Finding the Fourth Proportional to 317,136.11, 475,679.35 and 89,422.53

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Solution

The fourth proportional to 317,136.11, 475,679.35 and 89,422.53 is: 134,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,136.11 : 475,679.35 = 89,422.53 : x
  2. Step 2: Convert to fraction form
    317,136.11/475,679.35 = 89,422.53/x
  3. Step 3: Cross multiply
    317,136.11x = 475,679.35 × 89,422.53
  4. Step 4: Simplify right side
    317,136.11x = 42,536,450,498.64
  5. Step 5: Solve for x
    x = 42,536,450,498.64/317,136.11
  6. Step 6: Final answer
    x = 134,126.80

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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.