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Finding the Fourth Proportional to 91,574.80, 137,319.26 and 35,441.42

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Solution

The fourth proportional to 91,574.80, 137,319.26 and 35,441.42 is: 53,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,574.80 : 137,319.26 = 35,441.42 : x
  2. Step 2: Convert to fraction form
    91,574.80/137,319.26 = 35,441.42/x
  3. Step 3: Cross multiply
    91,574.80x = 137,319.26 × 35,441.42
  4. Step 4: Simplify right side
    91,574.80x = 4,866,789,567.75
  5. Step 5: Solve for x
    x = 4,866,789,567.75/91,574.80
  6. Step 6: Final answer
    x = 53,145.51

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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.