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Finding the Fourth Proportional to 223,166.50, 307,972.20 and 122,564.50

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Solution

The fourth proportional to 223,166.50, 307,972.20 and 122,564.50 is: 169,140.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,166.50 : 307,972.20 = 122,564.50 : x
  2. Step 2: Convert to fraction form
    223,166.50/307,972.20 = 122,564.50/x
  3. Step 3: Cross multiply
    223,166.50x = 307,972.20 × 122,564.50
  4. Step 4: Simplify right side
    223,166.50x = 37,746,458,706.90
  5. Step 5: Solve for x
    x = 37,746,458,706.90/223,166.50
  6. Step 6: Final answer
    x = 169,140.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.