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Finding the Fourth Proportional to 77,264.74, 106,618.17 and 43,730.74

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Solution

The fourth proportional to 77,264.74, 106,618.17 and 43,730.74 is: 60,344.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,264.74 : 106,618.17 = 43,730.74 : x
  2. Step 2: Convert to fraction form
    77,264.74/106,618.17 = 43,730.74/x
  3. Step 3: Cross multiply
    77,264.74x = 106,618.17 × 43,730.74
  4. Step 4: Simplify right side
    77,264.74x = 4,662,491,471.55
  5. Step 5: Solve for x
    x = 4,662,491,471.55/77,264.74
  6. Step 6: Final answer
    x = 60,344.36

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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.