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Finding the Fourth Proportional to 317,240.85, 437,641.47 and 189,891.84

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Solution

The fourth proportional to 317,240.85, 437,641.47 and 189,891.84 is: 261,960.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,240.85 : 437,641.47 = 189,891.84 : x
  2. Step 2: Convert to fraction form
    317,240.85/437,641.47 = 189,891.84/x
  3. Step 3: Cross multiply
    317,240.85x = 437,641.47 × 189,891.84
  4. Step 4: Simplify right side
    317,240.85x = 83,104,543,998.60
  5. Step 5: Solve for x
    x = 83,104,543,998.60/317,240.85
  6. Step 6: Final answer
    x = 261,960.41

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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.