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Finding the Fourth Proportional to 439,332.48, 606,591.12 and 347,314.32

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Solution

The fourth proportional to 439,332.48, 606,591.12 and 347,314.32 is: 479,540.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,332.48 : 606,591.12 = 347,314.32 : x
  2. Step 2: Convert to fraction form
    439,332.48/606,591.12 = 347,314.32/x
  3. Step 3: Cross multiply
    439,332.48x = 606,591.12 × 347,314.32
  4. Step 4: Simplify right side
    439,332.48x = 210,677,782,360.84
  5. Step 5: Solve for x
    x = 210,677,782,360.84/439,332.48
  6. Step 6: Final answer
    x = 479,540.65

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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.