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Finding the Fourth Proportional to 853,771.87, 1,178,250.53 and 491,250.80

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Solution

The fourth proportional to 853,771.87, 1,178,250.53 and 491,250.80 is: 677,952.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,771.87 : 1,178,250.53 = 491,250.80 : x
  2. Step 2: Convert to fraction form
    853,771.87/1,178,250.53 = 491,250.80/x
  3. Step 3: Cross multiply
    853,771.87x = 1,178,250.53 × 491,250.80
  4. Step 4: Simplify right side
    853,771.87x = 578,816,515,462.92
  5. Step 5: Solve for x
    x = 578,816,515,462.92/853,771.87
  6. Step 6: Final answer
    x = 677,952.20

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Double scale
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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.