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Finding the Fourth Proportional to 296,671.20, 445,019.11 and 86,309.13

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Solution

The fourth proportional to 296,671.20, 445,019.11 and 86,309.13 is: 129,467.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,671.20 : 445,019.11 = 86,309.13 : x
  2. Step 2: Convert to fraction form
    296,671.20/445,019.11 = 86,309.13/x
  3. Step 3: Cross multiply
    296,671.20x = 445,019.11 × 86,309.13
  4. Step 4: Simplify right side
    296,671.20x = 38,409,212,217.47
  5. Step 5: Solve for x
    x = 38,409,212,217.47/296,671.20
  6. Step 6: Final answer
    x = 129,467.28

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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.