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Finding the Fourth Proportional to 111,447.68, 153,794.79 and 67,823.87

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Solution

The fourth proportional to 111,447.68, 153,794.79 and 67,823.87 is: 93,595.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,447.68 : 153,794.79 = 67,823.87 : x
  2. Step 2: Convert to fraction form
    111,447.68/153,794.79 = 67,823.87/x
  3. Step 3: Cross multiply
    111,447.68x = 153,794.79 × 67,823.87
  4. Step 4: Simplify right side
    111,447.68x = 10,430,957,074.66
  5. Step 5: Solve for x
    x = 10,430,957,074.66/111,447.68
  6. Step 6: Final answer
    x = 93,595.11

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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.