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Finding the Fourth Proportional to 1,198,603.92, 1,654,407 and 689,470.32

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Solution

The fourth proportional to 1,198,603.92, 1,654,407 and 689,470.32 is: 951,660.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,603.92 : 1,654,407 = 689,470.32 : x
  2. Step 2: Convert to fraction form
    1,198,603.92/1,654,407 = 689,470.32/x
  3. Step 3: Cross multiply
    1,198,603.92x = 1,654,407 × 689,470.32
  4. Step 4: Simplify right side
    1,198,603.92x = 1,140,664,523,700.24
  5. Step 5: Solve for x
    x = 1,140,664,523,700.24/1,198,603.92
  6. Step 6: Final answer
    x = 951,660.93

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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.