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Finding the Fourth Proportional to 1,193,403, 1,646,896.20 and 656,859

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Solution

The fourth proportional to 1,193,403, 1,646,896.20 and 656,859 is: 906,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193,403 : 1,646,896.20 = 656,859 : x
  2. Step 2: Convert to fraction form
    1,193,403/1,646,896.20 = 656,859/x
  3. Step 3: Cross multiply
    1,193,403x = 1,646,896.20 × 656,859
  4. Step 4: Simplify right side
    1,193,403x = 1,081,778,591,035.80
  5. Step 5: Solve for x
    x = 1,081,778,591,035.80/1,193,403
  6. Step 6: Final answer
    x = 906,465.45

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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.