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Finding the Fourth Proportional to 289,258.70, 433,888.05 and 263,453.90

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Solution

The fourth proportional to 289,258.70, 433,888.05 and 263,453.90 is: 395,180.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,258.70 : 433,888.05 = 263,453.90 : x
  2. Step 2: Convert to fraction form
    289,258.70/433,888.05 = 263,453.90/x
  3. Step 3: Cross multiply
    289,258.70x = 433,888.05 × 263,453.90
  4. Step 4: Simplify right side
    289,258.70x = 114,309,498,935.90
  5. Step 5: Solve for x
    x = 114,309,498,935.90/289,258.70
  6. Step 6: Final answer
    x = 395,180.85

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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.