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Finding the Fourth Proportional to 104,857.20, 147,214.80 and 104,857.20

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Solution

The fourth proportional to 104,857.20, 147,214.80 and 104,857.20 is: 147,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,857.20 : 147,214.80 = 104,857.20 : x
  2. Step 2: Convert to fraction form
    104,857.20/147,214.80 = 104,857.20/x
  3. Step 3: Cross multiply
    104,857.20x = 147,214.80 × 104,857.20
  4. Step 4: Simplify right side
    104,857.20x = 15,436,531,726.56
  5. Step 5: Solve for x
    x = 15,436,531,726.56/104,857.20
  6. Step 6: Final answer
    x = 147,214.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.