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Finding the Fourth Proportional to 331,092.40, 496,638.60 and 260,233.60

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Solution

The fourth proportional to 331,092.40, 496,638.60 and 260,233.60 is: 390,350.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,092.40 : 496,638.60 = 260,233.60 : x
  2. Step 2: Convert to fraction form
    331,092.40/496,638.60 = 260,233.60/x
  3. Step 3: Cross multiply
    331,092.40x = 496,638.60 × 260,233.60
  4. Step 4: Simplify right side
    331,092.40x = 129,242,050,776.96
  5. Step 5: Solve for x
    x = 129,242,050,776.96/331,092.40
  6. Step 6: Final answer
    x = 390,350.40

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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.