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Finding the Fourth Proportional to 275,066.80, 412,600.20 and 185,386.13

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Solution

The fourth proportional to 275,066.80, 412,600.20 and 185,386.13 is: 278,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,066.80 : 412,600.20 = 185,386.13 : x
  2. Step 2: Convert to fraction form
    275,066.80/412,600.20 = 185,386.13/x
  3. Step 3: Cross multiply
    275,066.80x = 412,600.20 × 185,386.13
  4. Step 4: Simplify right side
    275,066.80x = 76,490,355,346.73
  5. Step 5: Solve for x
    x = 76,490,355,346.73/275,066.80
  6. Step 6: Final answer
    x = 278,079.20

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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.