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Finding the Fourth Proportional to 48,915.60, 67,406.64 and 34,728.72

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Solution

The fourth proportional to 48,915.60, 67,406.64 and 34,728.72 is: 47,856.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,915.60 : 67,406.64 = 34,728.72 : x
  2. Step 2: Convert to fraction form
    48,915.60/67,406.64 = 34,728.72/x
  3. Step 3: Cross multiply
    48,915.60x = 67,406.64 × 34,728.72
  4. Step 4: Simplify right side
    48,915.60x = 2,340,946,326.70
  5. Step 5: Solve for x
    x = 2,340,946,326.70/48,915.60
  6. Step 6: Final answer
    x = 47,856.85

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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.