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Finding the Fourth Proportional to 223,726.77, 308,744.26 and 121,753.04

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Solution

The fourth proportional to 223,726.77, 308,744.26 and 121,753.04 is: 168,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,726.77 : 308,744.26 = 121,753.04 : x
  2. Step 2: Convert to fraction form
    223,726.77/308,744.26 = 121,753.04/x
  3. Step 3: Cross multiply
    223,726.77x = 308,744.26 × 121,753.04
  4. Step 4: Simplify right side
    223,726.77x = 37,590,550,389.45
  5. Step 5: Solve for x
    x = 37,590,550,389.45/223,726.77
  6. Step 6: Final answer
    x = 168,019.90

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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.