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Finding the Fourth Proportional to 48,479.92, 66,941.04 and 31,492.60

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Solution

The fourth proportional to 48,479.92, 66,941.04 and 31,492.60 is: 43,484.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,479.92 : 66,941.04 = 31,492.60 : x
  2. Step 2: Convert to fraction form
    48,479.92/66,941.04 = 31,492.60/x
  3. Step 3: Cross multiply
    48,479.92x = 66,941.04 × 31,492.60
  4. Step 4: Simplify right side
    48,479.92x = 2,108,147,396.30
  5. Step 5: Solve for x
    x = 2,108,147,396.30/48,479.92
  6. Step 6: Final answer
    x = 43,484.96

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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.