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Finding the Fourth Proportional to 705,903.90, 1,058,855.85 and 374,127.90

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Solution

The fourth proportional to 705,903.90, 1,058,855.85 and 374,127.90 is: 561,191.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,903.90 : 1,058,855.85 = 374,127.90 : x
  2. Step 2: Convert to fraction form
    705,903.90/1,058,855.85 = 374,127.90/x
  3. Step 3: Cross multiply
    705,903.90x = 1,058,855.85 × 374,127.90
  4. Step 4: Simplify right side
    705,903.90x = 396,147,515,563.22
  5. Step 5: Solve for x
    x = 396,147,515,563.22/705,903.90
  6. Step 6: Final answer
    x = 561,191.85

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1.5x scale

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.