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Finding the Fourth Proportional to 85,493.93, 128,243.49 and 29,333.25

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Solution

The fourth proportional to 85,493.93, 128,243.49 and 29,333.25 is: 44,000.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,493.93 : 128,243.49 = 29,333.25 : x
  2. Step 2: Convert to fraction form
    85,493.93/128,243.49 = 29,333.25/x
  3. Step 3: Cross multiply
    85,493.93x = 128,243.49 × 29,333.25
  4. Step 4: Simplify right side
    85,493.93x = 3,761,798,353.04
  5. Step 5: Solve for x
    x = 3,761,798,353.04/85,493.93
  6. Step 6: Final answer
    x = 44,000.77

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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.