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Finding the Fourth Proportional to 65,111.67, 89,856 and 36,816.75

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Solution

The fourth proportional to 65,111.67, 89,856 and 36,816.75 is: 50,808.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,111.67 : 89,856 = 36,816.75 : x
  2. Step 2: Convert to fraction form
    65,111.67/89,856 = 36,816.75/x
  3. Step 3: Cross multiply
    65,111.67x = 89,856 × 36,816.75
  4. Step 4: Simplify right side
    65,111.67x = 3,308,205,888
  5. Step 5: Solve for x
    x = 3,308,205,888/65,111.67
  6. Step 6: Final answer
    x = 50,808.19

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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.