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Finding the Fourth Proportional to 1,071,508.80, 1,604,152.80 and 1,040,404.80

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Solution

The fourth proportional to 1,071,508.80, 1,604,152.80 and 1,040,404.80 is: 1,557,587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071,508.80 : 1,604,152.80 = 1,040,404.80 : x
  2. Step 2: Convert to fraction form
    1,071,508.80/1,604,152.80 = 1,040,404.80/x
  3. Step 3: Cross multiply
    1,071,508.80x = 1,604,152.80 × 1,040,404.80
  4. Step 4: Simplify right side
    1,071,508.80x = 1,668,968,273,053.44
  5. Step 5: Solve for x
    x = 1,668,968,273,053.44/1,071,508.80
  6. Step 6: Final answer
    x = 1,557,587.09

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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.