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Finding the Fourth Proportional to 111,299.87, 153,797.49 and 81,032.65

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Solution

The fourth proportional to 111,299.87, 153,797.49 and 81,032.65 is: 111,973.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,299.87 : 153,797.49 = 81,032.65 : x
  2. Step 2: Convert to fraction form
    111,299.87/153,797.49 = 81,032.65/x
  3. Step 3: Cross multiply
    111,299.87x = 153,797.49 × 81,032.65
  4. Step 4: Simplify right side
    111,299.87x = 12,462,617,793.55
  5. Step 5: Solve for x
    x = 12,462,617,793.55/111,299.87
  6. Step 6: Final answer
    x = 111,973.33

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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.