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Finding the Fourth Proportional to 683,331.56, 942,987.30 and 397,012.20

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Solution

The fourth proportional to 683,331.56, 942,987.30 and 397,012.20 is: 547,870.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,331.56 : 942,987.30 = 397,012.20 : x
  2. Step 2: Convert to fraction form
    683,331.56/942,987.30 = 397,012.20/x
  3. Step 3: Cross multiply
    683,331.56x = 942,987.30 × 397,012.20
  4. Step 4: Simplify right side
    683,331.56x = 374,377,462,545.06
  5. Step 5: Solve for x
    x = 374,377,462,545.06/683,331.56
  6. Step 6: Final answer
    x = 547,870.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.