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Finding the Fourth Proportional to 91,903.64, 137,873.88 and 41,970.30

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Solution

The fourth proportional to 91,903.64, 137,873.88 and 41,970.30 is: 62,963.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,903.64 : 137,873.88 = 41,970.30 : x
  2. Step 2: Convert to fraction form
    91,903.64/137,873.88 = 41,970.30/x
  3. Step 3: Cross multiply
    91,903.64x = 137,873.88 × 41,970.30
  4. Step 4: Simplify right side
    91,903.64x = 5,786,608,105.76
  5. Step 5: Solve for x
    x = 5,786,608,105.76/91,903.64
  6. Step 6: Final answer
    x = 62,963.87

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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.