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Finding the Fourth Proportional to 317,749.59, 476,623.97 and 81,092.27

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Solution

The fourth proportional to 317,749.59, 476,623.97 and 81,092.27 is: 121,638.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,749.59 : 476,623.97 = 81,092.27 : x
  2. Step 2: Convert to fraction form
    317,749.59/476,623.97 = 81,092.27/x
  3. Step 3: Cross multiply
    317,749.59x = 476,623.97 × 81,092.27
  4. Step 4: Simplify right side
    317,749.59x = 38,650,516,875.13
  5. Step 5: Solve for x
    x = 38,650,516,875.13/317,749.59
  6. Step 6: Final answer
    x = 121,638.29

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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.