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Finding the Fourth Proportional to 57,859.86, 79,703.80 and 49,334.20

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Solution

The fourth proportional to 57,859.86, 79,703.80 and 49,334.20 is: 67,959.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,859.86 : 79,703.80 = 49,334.20 : x
  2. Step 2: Convert to fraction form
    57,859.86/79,703.80 = 49,334.20/x
  3. Step 3: Cross multiply
    57,859.86x = 79,703.80 × 49,334.20
  4. Step 4: Simplify right side
    57,859.86x = 3,932,123,209.96
  5. Step 5: Solve for x
    x = 3,932,123,209.96/57,859.86
  6. Step 6: Final answer
    x = 67,959.43

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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.