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Finding the Fourth Proportional to 223,726.90, 335,707.35 and 90,621.22

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Solution

The fourth proportional to 223,726.90, 335,707.35 and 90,621.22 is: 135,979.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,726.90 : 335,707.35 = 90,621.22 : x
  2. Step 2: Convert to fraction form
    223,726.90/335,707.35 = 90,621.22/x
  3. Step 3: Cross multiply
    223,726.90x = 335,707.35 × 90,621.22
  4. Step 4: Simplify right side
    223,726.90x = 30,422,209,619.97
  5. Step 5: Solve for x
    x = 30,422,209,619.97/223,726.90
  6. Step 6: Final answer
    x = 135,979.22

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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.