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Finding the Fourth Proportional to 91,174.50, 125,825.74 and 53,460.90

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Solution

The fourth proportional to 91,174.50, 125,825.74 and 53,460.90 is: 73,778.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,174.50 : 125,825.74 = 53,460.90 : x
  2. Step 2: Convert to fraction form
    91,174.50/125,825.74 = 53,460.90/x
  3. Step 3: Cross multiply
    91,174.50x = 125,825.74 × 53,460.90
  4. Step 4: Simplify right side
    91,174.50x = 6,726,757,303.57
  5. Step 5: Solve for x
    x = 6,726,757,303.57/91,174.50
  6. Step 6: Final answer
    x = 73,778.93

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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.