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Finding the Fourth Proportional to 83,589.78, 115,353.54 and 45,863.22

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Solution

The fourth proportional to 83,589.78, 115,353.54 and 45,863.22 is: 63,291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,589.78 : 115,353.54 = 45,863.22 : x
  2. Step 2: Convert to fraction form
    83,589.78/115,353.54 = 45,863.22/x
  3. Step 3: Cross multiply
    83,589.78x = 115,353.54 × 45,863.22
  4. Step 4: Simplify right side
    83,589.78x = 5,290,484,782.80
  5. Step 5: Solve for x
    x = 5,290,484,782.80/83,589.78
  6. Step 6: Final answer
    x = 63,291.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.