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Finding the Fourth Proportional to 79,073.76, 109,118.60 and 47,260.20

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Solution

The fourth proportional to 79,073.76, 109,118.60 and 47,260.20 is: 65,217.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,073.76 : 109,118.60 = 47,260.20 : x
  2. Step 2: Convert to fraction form
    79,073.76/109,118.60 = 47,260.20/x
  3. Step 3: Cross multiply
    79,073.76x = 109,118.60 × 47,260.20
  4. Step 4: Simplify right side
    79,073.76x = 5,156,966,859.72
  5. Step 5: Solve for x
    x = 5,156,966,859.72/79,073.76
  6. Step 6: Final answer
    x = 65,217.17

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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.