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Finding the Fourth Proportional to 86,314.68, 129,484.78 and 44,218.58

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Solution

The fourth proportional to 86,314.68, 129,484.78 and 44,218.58 is: 66,334.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,314.68 : 129,484.78 = 44,218.58 : x
  2. Step 2: Convert to fraction form
    86,314.68/129,484.78 = 44,218.58/x
  3. Step 3: Cross multiply
    86,314.68x = 129,484.78 × 44,218.58
  4. Step 4: Simplify right side
    86,314.68x = 5,725,633,103.21
  5. Step 5: Solve for x
    x = 5,725,633,103.21/86,314.68
  6. Step 6: Final answer
    x = 66,334.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.