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Finding the Fourth Proportional to 438,911.68, 605,710.56 and 247,933.12

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Solution

The fourth proportional to 438,911.68, 605,710.56 and 247,933.12 is: 342,154.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,911.68 : 605,710.56 = 247,933.12 : x
  2. Step 2: Convert to fraction form
    438,911.68/605,710.56 = 247,933.12/x
  3. Step 3: Cross multiply
    438,911.68x = 605,710.56 × 247,933.12
  4. Step 4: Simplify right side
    438,911.68x = 150,175,708,957.75
  5. Step 5: Solve for x
    x = 150,175,708,957.75/438,911.68
  6. Step 6: Final answer
    x = 342,154.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.