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Finding the Fourth Proportional to 52,474.80, 78,712.20 and 33,812.40

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Solution

The fourth proportional to 52,474.80, 78,712.20 and 33,812.40 is: 50,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,474.80 : 78,712.20 = 33,812.40 : x
  2. Step 2: Convert to fraction form
    52,474.80/78,712.20 = 33,812.40/x
  3. Step 3: Cross multiply
    52,474.80x = 78,712.20 × 33,812.40
  4. Step 4: Simplify right side
    52,474.80x = 2,661,448,391.28
  5. Step 5: Solve for x
    x = 2,661,448,391.28/52,474.80
  6. Step 6: Final answer
    x = 50,718.60

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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.