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Finding the Fourth Proportional to 57,868.80, 79,858.56 and 32,718.40

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Solution

The fourth proportional to 57,868.80, 79,858.56 and 32,718.40 is: 45,151.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,868.80 : 79,858.56 = 32,718.40 : x
  2. Step 2: Convert to fraction form
    57,868.80/79,858.56 = 32,718.40/x
  3. Step 3: Cross multiply
    57,868.80x = 79,858.56 × 32,718.40
  4. Step 4: Simplify right side
    57,868.80x = 2,612,844,309.50
  5. Step 5: Solve for x
    x = 2,612,844,309.50/57,868.80
  6. Step 6: Final answer
    x = 45,151.17

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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.