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Finding the Fourth Proportional to 317,627.31, 476,427.30 and 80,962.93

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Solution

The fourth proportional to 317,627.31, 476,427.30 and 80,962.93 is: 121,440.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,627.31 : 476,427.30 = 80,962.93 : x
  2. Step 2: Convert to fraction form
    317,627.31/476,427.30 = 80,962.93/x
  3. Step 3: Cross multiply
    317,627.31x = 476,427.30 × 80,962.93
  4. Step 4: Simplify right side
    317,627.31x = 38,572,950,139.99
  5. Step 5: Solve for x
    x = 38,572,950,139.99/317,627.31
  6. Step 6: Final answer
    x = 121,440.91

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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.