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Finding the Fourth Proportional to 57,713.60, 86,570.40 and 53,436.80

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Solution

The fourth proportional to 57,713.60, 86,570.40 and 53,436.80 is: 80,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,713.60 : 86,570.40 = 53,436.80 : x
  2. Step 2: Convert to fraction form
    57,713.60/86,570.40 = 53,436.80/x
  3. Step 3: Cross multiply
    57,713.60x = 86,570.40 × 53,436.80
  4. Step 4: Simplify right side
    57,713.60x = 4,626,045,150.72
  5. Step 5: Solve for x
    x = 4,626,045,150.72/57,713.60
  6. Step 6: Final answer
    x = 80,155.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.