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Finding the Fourth Proportional to 68,811.61, 103,184.88 and 26,711.86

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Solution

The fourth proportional to 68,811.61, 103,184.88 and 26,711.86 is: 40,055.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,811.61 : 103,184.88 = 26,711.86 : x
  2. Step 2: Convert to fraction form
    68,811.61/103,184.88 = 26,711.86/x
  3. Step 3: Cross multiply
    68,811.61x = 103,184.88 × 26,711.86
  4. Step 4: Simplify right side
    68,811.61x = 2,756,260,068.68
  5. Step 5: Solve for x
    x = 2,756,260,068.68/68,811.61
  6. Step 6: Final answer
    x = 40,055.16

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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.