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Finding the Fourth Proportional to 107,989.74, 149,022.36 and 58,929.48

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Solution

The fourth proportional to 107,989.74, 149,022.36 and 58,929.48 is: 81,320.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,989.74 : 149,022.36 = 58,929.48 : x
  2. Step 2: Convert to fraction form
    107,989.74/149,022.36 = 58,929.48/x
  3. Step 3: Cross multiply
    107,989.74x = 149,022.36 × 58,929.48
  4. Step 4: Simplify right side
    107,989.74x = 8,781,810,183.17
  5. Step 5: Solve for x
    x = 8,781,810,183.17/107,989.74
  6. Step 6: Final answer
    x = 81,320.78

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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.