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Finding the Fourth Proportional to 1,867,728.90, 2,801,593.35 and 519,888.90

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Solution

The fourth proportional to 1,867,728.90, 2,801,593.35 and 519,888.90 is: 779,833.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867,728.90 : 2,801,593.35 = 519,888.90 : x
  2. Step 2: Convert to fraction form
    1,867,728.90/2,801,593.35 = 519,888.90/x
  3. Step 3: Cross multiply
    1,867,728.90x = 2,801,593.35 × 519,888.90
  4. Step 4: Simplify right side
    1,867,728.90x = 1,456,517,284,978.82
  5. Step 5: Solve for x
    x = 1,456,517,284,978.82/1,867,728.90
  6. Step 6: Final answer
    x = 779,833.35

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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.