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Finding the Fourth Proportional to 439,390.74, 606,335.67 and 248,392.74

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Solution

The fourth proportional to 439,390.74, 606,335.67 and 248,392.74 is: 342,768.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,390.74 : 606,335.67 = 248,392.74 : x
  2. Step 2: Convert to fraction form
    439,390.74/606,335.67 = 248,392.74/x
  3. Step 3: Cross multiply
    439,390.74x = 606,335.67 × 248,392.74
  4. Step 4: Simplify right side
    439,390.74x = 150,609,378,431.04
  5. Step 5: Solve for x
    x = 150,609,378,431.04/439,390.74
  6. Step 6: Final answer
    x = 342,768.67

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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.