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Finding the Fourth Proportional to 89,915.96, 124,082.13 and 49,078.74

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Solution

The fourth proportional to 89,915.96, 124,082.13 and 49,078.74 is: 67,727.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,915.96 : 124,082.13 = 49,078.74 : x
  2. Step 2: Convert to fraction form
    89,915.96/124,082.13 = 49,078.74/x
  3. Step 3: Cross multiply
    89,915.96x = 124,082.13 × 49,078.74
  4. Step 4: Simplify right side
    89,915.96x = 6,089,794,596.92
  5. Step 5: Solve for x
    x = 6,089,794,596.92/89,915.96
  6. Step 6: Final answer
    x = 67,727.63

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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.