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Finding the Fourth Proportional to 218,696.60, 328,044.76 and 168,849.47

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Solution

The fourth proportional to 218,696.60, 328,044.76 and 168,849.47 is: 253,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,696.60 : 328,044.76 = 168,849.47 : x
  2. Step 2: Convert to fraction form
    218,696.60/328,044.76 = 168,849.47/x
  3. Step 3: Cross multiply
    218,696.60x = 328,044.76 × 168,849.47
  4. Step 4: Simplify right side
    218,696.60x = 55,390,183,862.28
  5. Step 5: Solve for x
    x = 55,390,183,862.28/218,696.60
  6. Step 6: Final answer
    x = 253,274.10

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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.