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Finding the Fourth Proportional to 296,765.80, 445,148.70 and 86,410.60

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Solution

The fourth proportional to 296,765.80, 445,148.70 and 86,410.60 is: 129,615.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,765.80 : 445,148.70 = 86,410.60 : x
  2. Step 2: Convert to fraction form
    296,765.80/445,148.70 = 86,410.60/x
  3. Step 3: Cross multiply
    296,765.80x = 445,148.70 × 86,410.60
  4. Step 4: Simplify right side
    296,765.80x = 38,465,566,256.22
  5. Step 5: Solve for x
    x = 38,465,566,256.22/296,765.80
  6. Step 6: Final answer
    x = 129,615.90

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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.