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Finding the Fourth Proportional to 223,913.48, 308,987.70 and 134,472.20

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Solution

The fourth proportional to 223,913.48, 308,987.70 and 134,472.20 is: 185,563.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,913.48 : 308,987.70 = 134,472.20 : x
  2. Step 2: Convert to fraction form
    223,913.48/308,987.70 = 134,472.20/x
  3. Step 3: Cross multiply
    223,913.48x = 308,987.70 × 134,472.20
  4. Step 4: Simplify right side
    223,913.48x = 41,550,255,791.94
  5. Step 5: Solve for x
    x = 41,550,255,791.94/223,913.48
  6. Step 6: Final answer
    x = 185,563.89

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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.