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Finding the Fourth Proportional to 40,478.88, 55,860.86 and 23,711.88

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Solution

The fourth proportional to 40,478.88, 55,860.86 and 23,711.88 is: 32,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,478.88 : 55,860.86 = 23,711.88 : x
  2. Step 2: Convert to fraction form
    40,478.88/55,860.86 = 23,711.88/x
  3. Step 3: Cross multiply
    40,478.88x = 55,860.86 × 23,711.88
  4. Step 4: Simplify right side
    40,478.88x = 1,324,566,009.02
  5. Step 5: Solve for x
    x = 1,324,566,009.02/40,478.88
  6. Step 6: Final answer
    x = 32,722.40

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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.