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Finding the Fourth Proportional to 60,961.44, 91,364.16 and 31,373.76

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Solution

The fourth proportional to 60,961.44, 91,364.16 and 31,373.76 is: 47,020.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,961.44 : 91,364.16 = 31,373.76 : x
  2. Step 2: Convert to fraction form
    60,961.44/91,364.16 = 31,373.76/x
  3. Step 3: Cross multiply
    60,961.44x = 91,364.16 × 31,373.76
  4. Step 4: Simplify right side
    60,961.44x = 2,866,437,228.44
  5. Step 5: Solve for x
    x = 2,866,437,228.44/60,961.44
  6. Step 6: Final answer
    x = 47,020.50

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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.