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Finding the Fourth Proportional to 664,612.40, 995,514.60 and 440,080.40

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Solution

The fourth proportional to 664,612.40, 995,514.60 and 440,080.40 is: 659,190.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,612.40 : 995,514.60 = 440,080.40 : x
  2. Step 2: Convert to fraction form
    664,612.40/995,514.60 = 440,080.40/x
  3. Step 3: Cross multiply
    664,612.40x = 995,514.60 × 440,080.40
  4. Step 4: Simplify right side
    664,612.40x = 438,106,463,373.84
  5. Step 5: Solve for x
    x = 438,106,463,373.84/664,612.40
  6. Step 6: Final answer
    x = 659,190.93

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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.