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Finding the Fourth Proportional to 974,781.92, 1,342,208.40 and 853,243.04

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Solution

The fourth proportional to 974,781.92, 1,342,208.40 and 853,243.04 is: 1,174,857.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    974,781.92 : 1,342,208.40 = 853,243.04 : x
  2. Step 2: Convert to fraction form
    974,781.92/1,342,208.40 = 853,243.04/x
  3. Step 3: Cross multiply
    974,781.92x = 1,342,208.40 × 853,243.04
  4. Step 4: Simplify right side
    974,781.92x = 1,145,229,975,529.54
  5. Step 5: Solve for x
    x = 1,145,229,975,529.54/974,781.92
  6. Step 6: Final answer
    x = 1,174,857.63

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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.