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Finding the Fourth Proportional to 313,281.60, 469,663.20 and 165,537.60

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Solution

The fourth proportional to 313,281.60, 469,663.20 and 165,537.60 is: 248,169.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,281.60 : 469,663.20 = 165,537.60 : x
  2. Step 2: Convert to fraction form
    313,281.60/469,663.20 = 165,537.60/x
  3. Step 3: Cross multiply
    313,281.60x = 469,663.20 × 165,537.60
  4. Step 4: Simplify right side
    313,281.60x = 77,746,918,936.32
  5. Step 5: Solve for x
    x = 77,746,918,936.32/313,281.60
  6. Step 6: Final answer
    x = 248,169.44

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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.