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Finding the Fourth Proportional to 216,215.76, 324,060.43 and 153,053.79

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Solution

The fourth proportional to 216,215.76, 324,060.43 and 153,053.79 is: 229,394.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,215.76 : 324,060.43 = 153,053.79 : x
  2. Step 2: Convert to fraction form
    216,215.76/324,060.43 = 153,053.79/x
  3. Step 3: Cross multiply
    216,215.76x = 324,060.43 × 153,053.79
  4. Step 4: Simplify right side
    216,215.76x = 49,598,677,000.53
  5. Step 5: Solve for x
    x = 49,598,677,000.53/216,215.76
  6. Step 6: Final answer
    x = 229,394.37

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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.