Home / 296,966.60-445,449.90-86,625.80

Finding the Fourth Proportional to 296,966.60, 445,449.90 and 86,625.80

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Solution

The fourth proportional to 296,966.60, 445,449.90 and 86,625.80 is: 129,938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,966.60 : 445,449.90 = 86,625.80 : x
  2. Step 2: Convert to fraction form
    296,966.60/445,449.90 = 86,625.80/x
  3. Step 3: Cross multiply
    296,966.60x = 445,449.90 × 86,625.80
  4. Step 4: Simplify right side
    296,966.60x = 38,587,453,947.42
  5. Step 5: Solve for x
    x = 38,587,453,947.42/296,966.60
  6. Step 6: Final answer
    x = 129,938.70

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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.