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Finding the Fourth Proportional to 336,019.40, 503,445.90 and 315,024.20

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Solution

The fourth proportional to 336,019.40, 503,445.90 and 315,024.20 is: 471,989.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,019.40 : 503,445.90 = 315,024.20 : x
  2. Step 2: Convert to fraction form
    336,019.40/503,445.90 = 315,024.20/x
  3. Step 3: Cross multiply
    336,019.40x = 503,445.90 × 315,024.20
  4. Step 4: Simplify right side
    336,019.40x = 158,597,641,890.78
  5. Step 5: Solve for x
    x = 158,597,641,890.78/336,019.40
  6. Step 6: Final answer
    x = 471,989.54

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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.