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Finding the Fourth Proportional to 111,367.52, 153,686.16 and 61,065.44

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Solution

The fourth proportional to 111,367.52, 153,686.16 and 61,065.44 is: 84,269.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,367.52 : 153,686.16 = 61,065.44 : x
  2. Step 2: Convert to fraction form
    111,367.52/153,686.16 = 61,065.44/x
  3. Step 3: Cross multiply
    111,367.52x = 153,686.16 × 61,065.44
  4. Step 4: Simplify right side
    111,367.52x = 9,384,912,982.31
  5. Step 5: Solve for x
    x = 9,384,912,982.31/111,367.52
  6. Step 6: Final answer
    x = 84,269.75

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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.