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Finding the Fourth Proportional to 391,107.60, 586,515.60 and 154,401.30

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Solution

The fourth proportional to 391,107.60, 586,515.60 and 154,401.30 is: 231,544.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,107.60 : 586,515.60 = 154,401.30 : x
  2. Step 2: Convert to fraction form
    391,107.60/586,515.60 = 154,401.30/x
  3. Step 3: Cross multiply
    391,107.60x = 586,515.60 × 154,401.30
  4. Step 4: Simplify right side
    391,107.60x = 90,558,771,110.28
  5. Step 5: Solve for x
    x = 90,558,771,110.28/391,107.60
  6. Step 6: Final answer
    x = 231,544.39

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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.