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Finding the Fourth Proportional to 68,968.70, 103,465.20 and 24,621.20

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Solution

The fourth proportional to 68,968.70, 103,465.20 and 24,621.20 is: 36,936.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,968.70 : 103,465.20 = 24,621.20 : x
  2. Step 2: Convert to fraction form
    68,968.70/103,465.20 = 24,621.20/x
  3. Step 3: Cross multiply
    68,968.70x = 103,465.20 × 24,621.20
  4. Step 4: Simplify right side
    68,968.70x = 2,547,437,382.24
  5. Step 5: Solve for x
    x = 2,547,437,382.24/68,968.70
  6. Step 6: Final answer
    x = 36,936.14

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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.