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Finding the Fourth Proportional to 289,313.40, 433,905.30 and 190,169.40

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Solution

The fourth proportional to 289,313.40, 433,905.30 and 190,169.40 is: 285,211.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,313.40 : 433,905.30 = 190,169.40 : x
  2. Step 2: Convert to fraction form
    289,313.40/433,905.30 = 190,169.40/x
  3. Step 3: Cross multiply
    289,313.40x = 433,905.30 × 190,169.40
  4. Step 4: Simplify right side
    289,313.40x = 82,515,510,557.82
  5. Step 5: Solve for x
    x = 82,515,510,557.82/289,313.40
  6. Step 6: Final answer
    x = 285,211.51

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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.