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Finding the Fourth Proportional to 281,086.03, 387,898.72 and 153,764.36

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Solution

The fourth proportional to 281,086.03, 387,898.72 and 153,764.36 is: 212,194.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,086.03 : 387,898.72 = 153,764.36 : x
  2. Step 2: Convert to fraction form
    281,086.03/387,898.72 = 153,764.36/x
  3. Step 3: Cross multiply
    281,086.03x = 387,898.72 × 153,764.36
  4. Step 4: Simplify right side
    281,086.03x = 59,644,998,421.26
  5. Step 5: Solve for x
    x = 59,644,998,421.26/281,086.03
  6. Step 6: Final answer
    x = 212,194.82

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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.