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Finding the Fourth Proportional to 217,306.47, 325,892.21 and 104,916.81

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Solution

The fourth proportional to 217,306.47, 325,892.21 and 104,916.81 is: 157,342.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,306.47 : 325,892.21 = 104,916.81 : x
  2. Step 2: Convert to fraction form
    217,306.47/325,892.21 = 104,916.81/x
  3. Step 3: Cross multiply
    217,306.47x = 325,892.21 × 104,916.81
  4. Step 4: Simplify right side
    217,306.47x = 34,191,570,552.47
  5. Step 5: Solve for x
    x = 34,191,570,552.47/217,306.47
  6. Step 6: Final answer
    x = 157,342.63

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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.