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Finding the Fourth Proportional to 57,520.04, 86,405.86 and 40,986.32

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Solution

The fourth proportional to 57,520.04, 86,405.86 and 40,986.32 is: 61,569.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,520.04 : 86,405.86 = 40,986.32 : x
  2. Step 2: Convert to fraction form
    57,520.04/86,405.86 = 40,986.32/x
  3. Step 3: Cross multiply
    57,520.04x = 86,405.86 × 40,986.32
  4. Step 4: Simplify right side
    57,520.04x = 3,541,458,227.84
  5. Step 5: Solve for x
    x = 3,541,458,227.84/57,520.04
  6. Step 6: Final answer
    x = 61,569.12

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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.