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Finding the Fourth Proportional to 439,441.71, 606,445.88 and 248,443.71

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Solution

The fourth proportional to 439,441.71, 606,445.88 and 248,443.71 is: 342,861.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,441.71 : 606,445.88 = 248,443.71 : x
  2. Step 2: Convert to fraction form
    439,441.71/606,445.88 = 248,443.71/x
  3. Step 3: Cross multiply
    439,441.71x = 606,445.88 × 248,443.71
  4. Step 4: Simplify right side
    439,441.71x = 150,667,664,341.42
  5. Step 5: Solve for x
    x = 150,667,664,341.42/439,441.71
  6. Step 6: Final answer
    x = 342,861.55

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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.