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Finding the Fourth Proportional to 372,662.80, 558,994.20 and 260,105.20

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Solution

The fourth proportional to 372,662.80, 558,994.20 and 260,105.20 is: 390,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,662.80 : 558,994.20 = 260,105.20 : x
  2. Step 2: Convert to fraction form
    372,662.80/558,994.20 = 260,105.20/x
  3. Step 3: Cross multiply
    372,662.80x = 558,994.20 × 260,105.20
  4. Step 4: Simplify right side
    372,662.80x = 145,397,298,189.84
  5. Step 5: Solve for x
    x = 145,397,298,189.84/372,662.80
  6. Step 6: Final answer
    x = 390,157.80

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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.