Home / 296,942.80-445,414.20-86,587.60

Finding the Fourth Proportional to 296,942.80, 445,414.20 and 86,587.60

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Solution

The fourth proportional to 296,942.80, 445,414.20 and 86,587.60 is: 129,881.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,942.80 : 445,414.20 = 86,587.60 : x
  2. Step 2: Convert to fraction form
    296,942.80/445,414.20 = 86,587.60/x
  3. Step 3: Cross multiply
    296,942.80x = 445,414.20 × 86,587.60
  4. Step 4: Simplify right side
    296,942.80x = 38,567,346,583.92
  5. Step 5: Solve for x
    x = 38,567,346,583.92/296,942.80
  6. Step 6: Final answer
    x = 129,881.40

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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.