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Finding the Fourth Proportional to 77,491.70, 106,934.19 and 43,497.12

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Solution

The fourth proportional to 77,491.70, 106,934.19 and 43,497.12 is: 60,023.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,491.70 : 106,934.19 = 43,497.12 : x
  2. Step 2: Convert to fraction form
    77,491.70/106,934.19 = 43,497.12/x
  3. Step 3: Cross multiply
    77,491.70x = 106,934.19 × 43,497.12
  4. Step 4: Simplify right side
    77,491.70x = 4,651,329,175.59
  5. Step 5: Solve for x
    x = 4,651,329,175.59/77,491.70
  6. Step 6: Final answer
    x = 60,023.58

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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.