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Finding the Fourth Proportional to 52,412.80, 78,619.20 and 50,339.20

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Solution

The fourth proportional to 52,412.80, 78,619.20 and 50,339.20 is: 75,508.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,412.80 : 78,619.20 = 50,339.20 : x
  2. Step 2: Convert to fraction form
    52,412.80/78,619.20 = 50,339.20/x
  3. Step 3: Cross multiply
    52,412.80x = 78,619.20 × 50,339.20
  4. Step 4: Simplify right side
    52,412.80x = 3,957,627,632.64
  5. Step 5: Solve for x
    x = 3,957,627,632.64/52,412.80
  6. Step 6: Final answer
    x = 75,508.80

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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.