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Finding the Fourth Proportional to 654,066.40, 981,245.40 and 512,348.80

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Solution

The fourth proportional to 654,066.40, 981,245.40 and 512,348.80 is: 768,637.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,066.40 : 981,245.40 = 512,348.80 : x
  2. Step 2: Convert to fraction form
    654,066.40/981,245.40 = 512,348.80/x
  3. Step 3: Cross multiply
    654,066.40x = 981,245.40 × 512,348.80
  4. Step 4: Simplify right side
    654,066.40x = 502,739,903,195.52
  5. Step 5: Solve for x
    x = 502,739,903,195.52/654,066.40
  6. Step 6: Final answer
    x = 768,637.41

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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.