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Finding the Fourth Proportional to 85,358.95, 128,038.44 and 29,199.59

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Solution

The fourth proportional to 85,358.95, 128,038.44 and 29,199.59 is: 43,799.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,358.95 : 128,038.44 = 29,199.59 : x
  2. Step 2: Convert to fraction form
    85,358.95/128,038.44 = 29,199.59/x
  3. Step 3: Cross multiply
    85,358.95x = 128,038.44 × 29,199.59
  4. Step 4: Simplify right side
    85,358.95x = 3,738,669,952.24
  5. Step 5: Solve for x
    x = 3,738,669,952.24/85,358.95
  6. Step 6: Final answer
    x = 43,799.39

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Similar ratio
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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.