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Finding the Fourth Proportional to 91,454.80, 137,268.60 and 56,462.80

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Solution

The fourth proportional to 91,454.80, 137,268.60 and 56,462.80 is: 84,747.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,454.80 : 137,268.60 = 56,462.80 : x
  2. Step 2: Convert to fraction form
    91,454.80/137,268.60 = 56,462.80/x
  3. Step 3: Cross multiply
    91,454.80x = 137,268.60 × 56,462.80
  4. Step 4: Simplify right side
    91,454.80x = 7,750,569,508.08
  5. Step 5: Solve for x
    x = 7,750,569,508.08/91,454.80
  6. Step 6: Final answer
    x = 84,747.54

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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.