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Finding the Fourth Proportional to 111,633.75, 154,057.01 and 61,332.75

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Solution

The fourth proportional to 111,633.75, 154,057.01 and 61,332.75 is: 84,640.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,633.75 : 154,057.01 = 61,332.75 : x
  2. Step 2: Convert to fraction form
    111,633.75/154,057.01 = 61,332.75/x
  3. Step 3: Cross multiply
    111,633.75x = 154,057.01 × 61,332.75
  4. Step 4: Simplify right side
    111,633.75x = 9,448,739,773.41
  5. Step 5: Solve for x
    x = 9,448,739,773.41/111,633.75
  6. Step 6: Final answer
    x = 84,640.53

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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.