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Finding the Fourth Proportional to 81,069.99, 111,886.70 and 49,230.51

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Solution

The fourth proportional to 81,069.99, 111,886.70 and 49,230.51 is: 67,944.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,069.99 : 111,886.70 = 49,230.51 : x
  2. Step 2: Convert to fraction form
    81,069.99/111,886.70 = 49,230.51/x
  3. Step 3: Cross multiply
    81,069.99x = 111,886.70 × 49,230.51
  4. Step 4: Simplify right side
    81,069.99x = 5,508,239,057.06
  5. Step 5: Solve for x
    x = 5,508,239,057.06/81,069.99
  6. Step 6: Final answer
    x = 67,944.24

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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.