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Finding the Fourth Proportional to 1,070,983.30, 1,603,364.55 and 1,039,879.30

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Solution

The fourth proportional to 1,070,983.30, 1,603,364.55 and 1,039,879.30 is: 1,556,798.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,983.30 : 1,603,364.55 = 1,039,879.30 : x
  2. Step 2: Convert to fraction form
    1,070,983.30/1,603,364.55 = 1,039,879.30/x
  3. Step 3: Cross multiply
    1,070,983.30x = 1,603,364.55 × 1,039,879.30
  4. Step 4: Simplify right side
    1,070,983.30x = 1,667,305,605,898.82
  5. Step 5: Solve for x
    x = 1,667,305,605,898.82/1,070,983.30
  6. Step 6: Final answer
    x = 1,556,798.88

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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.