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Finding the Fourth Proportional to 61,151.76, 91,644.21 and 31,506.84

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Solution

The fourth proportional to 61,151.76, 91,644.21 and 31,506.84 is: 47,217.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,151.76 : 91,644.21 = 31,506.84 : x
  2. Step 2: Convert to fraction form
    61,151.76/91,644.21 = 31,506.84/x
  3. Step 3: Cross multiply
    61,151.76x = 91,644.21 × 31,506.84
  4. Step 4: Simplify right side
    61,151.76x = 2,887,419,461.40
  5. Step 5: Solve for x
    x = 2,887,419,461.40/61,151.76
  6. Step 6: Final answer
    x = 47,217.27

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1.5x scale

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.