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Finding the Fourth Proportional to 85,385.01, 128,074.91 and 22,203.74

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Solution

The fourth proportional to 85,385.01, 128,074.91 and 22,203.74 is: 33,304.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,385.01 : 128,074.91 = 22,203.74 : x
  2. Step 2: Convert to fraction form
    85,385.01/128,074.91 = 22,203.74/x
  3. Step 3: Cross multiply
    85,385.01x = 128,074.91 × 22,203.74
  4. Step 4: Simplify right side
    85,385.01x = 2,843,741,250.77
  5. Step 5: Solve for x
    x = 2,843,741,250.77/85,385.01
  6. Step 6: Final answer
    x = 33,304.92

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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.