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Finding the Fourth Proportional to 85,545.84, 117,933.12 and 53,693.44

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Solution

The fourth proportional to 85,545.84, 117,933.12 and 53,693.44 is: 74,021.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,545.84 : 117,933.12 = 53,693.44 : x
  2. Step 2: Convert to fraction form
    85,545.84/117,933.12 = 53,693.44/x
  3. Step 3: Cross multiply
    85,545.84x = 117,933.12 × 53,693.44
  4. Step 4: Simplify right side
    85,545.84x = 6,332,234,902.73
  5. Step 5: Solve for x
    x = 6,332,234,902.73/85,545.84
  6. Step 6: Final answer
    x = 74,021.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.