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Finding the Fourth Proportional to 85,357.56, 128,033.10 and 23,029.68

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Solution

The fourth proportional to 85,357.56, 128,033.10 and 23,029.68 is: 34,543.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,357.56 : 128,033.10 = 23,029.68 : x
  2. Step 2: Convert to fraction form
    85,357.56/128,033.10 = 23,029.68/x
  3. Step 3: Cross multiply
    85,357.56x = 128,033.10 × 23,029.68
  4. Step 4: Simplify right side
    85,357.56x = 2,948,561,322.41
  5. Step 5: Solve for x
    x = 2,948,561,322.41/85,357.56
  6. Step 6: Final answer
    x = 34,543.65

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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.