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Finding the Fourth Proportional to 336,885.70, 505,401.45 and 100,252.30

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Solution

The fourth proportional to 336,885.70, 505,401.45 and 100,252.30 is: 150,400.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,885.70 : 505,401.45 = 100,252.30 : x
  2. Step 2: Convert to fraction form
    336,885.70/505,401.45 = 100,252.30/x
  3. Step 3: Cross multiply
    336,885.70x = 505,401.45 × 100,252.30
  4. Step 4: Simplify right side
    336,885.70x = 50,667,657,785.84
  5. Step 5: Solve for x
    x = 50,667,657,785.84/336,885.70
  6. Step 6: Final answer
    x = 150,400.14

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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.