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Finding the Fourth Proportional to 68,547.20, 102,859.20 and 29,097.60

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Solution

The fourth proportional to 68,547.20, 102,859.20 and 29,097.60 is: 43,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,547.20 : 102,859.20 = 29,097.60 : x
  2. Step 2: Convert to fraction form
    68,547.20/102,859.20 = 29,097.60/x
  3. Step 3: Cross multiply
    68,547.20x = 102,859.20 × 29,097.60
  4. Step 4: Simplify right side
    68,547.20x = 2,992,955,857.92
  5. Step 5: Solve for x
    x = 2,992,955,857.92/68,547.20
  6. Step 6: Final answer
    x = 43,662.70

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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.