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Finding the Fourth Proportional to 79,342.16, 109,491.32 and 43,532.16

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Solution

The fourth proportional to 79,342.16, 109,491.32 and 43,532.16 is: 60,073.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,342.16 : 109,491.32 = 43,532.16 : x
  2. Step 2: Convert to fraction form
    79,342.16/109,491.32 = 43,532.16/x
  3. Step 3: Cross multiply
    79,342.16x = 109,491.32 × 43,532.16
  4. Step 4: Simplify right side
    79,342.16x = 4,766,393,544.60
  5. Step 5: Solve for x
    x = 4,766,393,544.60/79,342.16
  6. Step 6: Final answer
    x = 60,073.91

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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.