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Finding the Fourth Proportional to 1,093,575.90, 1,640,363.85 and 943,985.10

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Solution

The fourth proportional to 1,093,575.90, 1,640,363.85 and 943,985.10 is: 1,415,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,093,575.90 : 1,640,363.85 = 943,985.10 : x
  2. Step 2: Convert to fraction form
    1,093,575.90/1,640,363.85 = 943,985.10/x
  3. Step 3: Cross multiply
    1,093,575.90x = 1,640,363.85 × 943,985.10
  4. Step 4: Simplify right side
    1,093,575.90x = 1,548,479,032,978.64
  5. Step 5: Solve for x
    x = 1,548,479,032,978.64/1,093,575.90
  6. Step 6: Final answer
    x = 1,415,977.65

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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.