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Finding the Fourth Proportional to 69,117.67, 103,671.64 and 26,989.84

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Solution

The fourth proportional to 69,117.67, 103,671.64 and 26,989.84 is: 40,482.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,117.67 : 103,671.64 = 26,989.84 : x
  2. Step 2: Convert to fraction form
    69,117.67/103,671.64 = 26,989.84/x
  3. Step 3: Cross multiply
    69,117.67x = 103,671.64 × 26,989.84
  4. Step 4: Simplify right side
    69,117.67x = 2,798,080,976.14
  5. Step 5: Solve for x
    x = 2,798,080,976.14/69,117.67
  6. Step 6: Final answer
    x = 40,482.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.