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Finding the Fourth Proportional to 463,105.53, 639,112.55 and 259,154.67

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Solution

The fourth proportional to 463,105.53, 639,112.55 and 259,154.67 is: 357,648.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,105.53 : 639,112.55 = 259,154.67 : x
  2. Step 2: Convert to fraction form
    463,105.53/639,112.55 = 259,154.67/x
  3. Step 3: Cross multiply
    463,105.53x = 639,112.55 × 259,154.67
  4. Step 4: Simplify right side
    463,105.53x = 165,629,000,692.34
  5. Step 5: Solve for x
    x = 165,629,000,692.34/463,105.53
  6. Step 6: Final answer
    x = 357,648.51

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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.