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Finding the Fourth Proportional to 523,998.11, 786,097.61 and 168,916.79

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Solution

The fourth proportional to 523,998.11, 786,097.61 and 168,916.79 is: 253,407.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,998.11 : 786,097.61 = 168,916.79 : x
  2. Step 2: Convert to fraction form
    523,998.11/786,097.61 = 168,916.79/x
  3. Step 3: Cross multiply
    523,998.11x = 786,097.61 × 168,916.79
  4. Step 4: Simplify right side
    523,998.11x = 132,785,080,132.80
  5. Step 5: Solve for x
    x = 132,785,080,132.80/523,998.11
  6. Step 6: Final answer
    x = 253,407.56

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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.