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Finding the Fourth Proportional to 79,497.55, 109,701.32 and 43,686.79

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Solution

The fourth proportional to 79,497.55, 109,701.32 and 43,686.79 is: 60,284.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,497.55 : 109,701.32 = 43,686.79 : x
  2. Step 2: Convert to fraction form
    79,497.55/109,701.32 = 43,686.79/x
  3. Step 3: Cross multiply
    79,497.55x = 109,701.32 × 43,686.79
  4. Step 4: Simplify right side
    79,497.55x = 4,792,498,311.13
  5. Step 5: Solve for x
    x = 4,792,498,311.13/79,497.55
  6. Step 6: Final answer
    x = 60,284.86

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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.