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Finding the Fourth Proportional to 55,937.80, 83,906.70 and 53,216.20

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Solution

The fourth proportional to 55,937.80, 83,906.70 and 53,216.20 is: 79,824.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,937.80 : 83,906.70 = 53,216.20 : x
  2. Step 2: Convert to fraction form
    55,937.80/83,906.70 = 53,216.20/x
  3. Step 3: Cross multiply
    55,937.80x = 83,906.70 × 53,216.20
  4. Step 4: Simplify right side
    55,937.80x = 4,465,195,728.54
  5. Step 5: Solve for x
    x = 4,465,195,728.54/55,937.80
  6. Step 6: Final answer
    x = 79,824.30

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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.