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Finding the Fourth Proportional to 587,855.07, 811,236.20 and 319,583.07

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Solution

The fourth proportional to 587,855.07, 811,236.20 and 319,583.07 is: 441,022.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,855.07 : 811,236.20 = 319,583.07 : x
  2. Step 2: Convert to fraction form
    587,855.07/811,236.20 = 319,583.07/x
  3. Step 3: Cross multiply
    587,855.07x = 811,236.20 × 319,583.07
  4. Step 4: Simplify right side
    587,855.07x = 259,257,353,693.22
  5. Step 5: Solve for x
    x = 259,257,353,693.22/587,855.07
  6. Step 6: Final answer
    x = 441,022.57

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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.