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Finding the Fourth Proportional to 55,607.44, 76,743.78 and 31,737.72

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Solution

The fourth proportional to 55,607.44, 76,743.78 and 31,737.72 is: 43,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,607.44 : 76,743.78 = 31,737.72 : x
  2. Step 2: Convert to fraction form
    55,607.44/76,743.78 = 31,737.72/x
  3. Step 3: Cross multiply
    55,607.44x = 76,743.78 × 31,737.72
  4. Step 4: Simplify right side
    55,607.44x = 2,435,672,601.38
  5. Step 5: Solve for x
    x = 2,435,672,601.38/55,607.44
  6. Step 6: Final answer
    x = 43,801.20

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1.5x scale

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.