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Finding the Fourth Proportional to 296,992.17, 445,452.08 and 86,630.31

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Solution

The fourth proportional to 296,992.17, 445,452.08 and 86,630.31 is: 129,934.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,992.17 : 445,452.08 = 86,630.31 : x
  2. Step 2: Convert to fraction form
    296,992.17/445,452.08 = 86,630.31/x
  3. Step 3: Cross multiply
    296,992.17x = 445,452.08 × 86,630.31
  4. Step 4: Simplify right side
    296,992.17x = 38,589,651,347.39
  5. Step 5: Solve for x
    x = 38,589,651,347.39/296,992.17
  6. Step 6: Final answer
    x = 129,934.91

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1.5x scale

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.