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Finding the Fourth Proportional to 518,119.62, 777,284.18 and 218,600.92

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Solution

The fourth proportional to 518,119.62, 777,284.18 and 218,600.92 is: 327,945.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,119.62 : 777,284.18 = 218,600.92 : x
  2. Step 2: Convert to fraction form
    518,119.62/777,284.18 = 218,600.92/x
  3. Step 3: Cross multiply
    518,119.62x = 777,284.18 × 218,600.92
  4. Step 4: Simplify right side
    518,119.62x = 169,915,036,849.45
  5. Step 5: Solve for x
    x = 169,915,036,849.45/518,119.62
  6. Step 6: Final answer
    x = 327,945.58

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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.