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Finding the Fourth Proportional to 57,718.49, 79,684.56 and 43,998.80

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Solution

The fourth proportional to 57,718.49, 79,684.56 and 43,998.80 is: 60,743.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,718.49 : 79,684.56 = 43,998.80 : x
  2. Step 2: Convert to fraction form
    57,718.49/79,684.56 = 43,998.80/x
  3. Step 3: Cross multiply
    57,718.49x = 79,684.56 × 43,998.80
  4. Step 4: Simplify right side
    57,718.49x = 3,506,024,620.11
  5. Step 5: Solve for x
    x = 3,506,024,620.11/57,718.49
  6. Step 6: Final answer
    x = 60,743.53

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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.