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Finding the Fourth Proportional to 111,574.65, 153,921.41 and 66,226.80

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Solution

The fourth proportional to 111,574.65, 153,921.41 and 66,226.80 is: 91,362.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,574.65 : 153,921.41 = 66,226.80 : x
  2. Step 2: Convert to fraction form
    111,574.65/153,921.41 = 66,226.80/x
  3. Step 3: Cross multiply
    111,574.65x = 153,921.41 × 66,226.80
  4. Step 4: Simplify right side
    111,574.65x = 10,193,722,104.65
  5. Step 5: Solve for x
    x = 10,193,722,104.65/111,574.65
  6. Step 6: Final answer
    x = 91,362.35

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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.