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Finding the Fourth Proportional to 68,671.35, 103,045.29 and 37,080.74

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Solution

The fourth proportional to 68,671.35, 103,045.29 and 37,080.74 is: 55,641.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,671.35 : 103,045.29 = 37,080.74 : x
  2. Step 2: Convert to fraction form
    68,671.35/103,045.29 = 37,080.74/x
  3. Step 3: Cross multiply
    68,671.35x = 103,045.29 × 37,080.74
  4. Step 4: Simplify right side
    68,671.35x = 3,820,995,606.71
  5. Step 5: Solve for x
    x = 3,820,995,606.71/68,671.35
  6. Step 6: Final answer
    x = 55,641.77

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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.