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Finding the Fourth Proportional to 83,216.64, 124,819.20 and 30,616.32

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Solution

The fourth proportional to 83,216.64, 124,819.20 and 30,616.32 is: 45,922.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,216.64 : 124,819.20 = 30,616.32 : x
  2. Step 2: Convert to fraction form
    83,216.64/124,819.20 = 30,616.32/x
  3. Step 3: Cross multiply
    83,216.64x = 124,819.20 × 30,616.32
  4. Step 4: Simplify right side
    83,216.64x = 3,821,504,569.34
  5. Step 5: Solve for x
    x = 3,821,504,569.34/83,216.64
  6. Step 6: Final answer
    x = 45,922.36

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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.