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Finding the Fourth Proportional to 638,011.60, 956,556.60 and 357,614.80

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Solution

The fourth proportional to 638,011.60, 956,556.60 and 357,614.80 is: 536,163.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,011.60 : 956,556.60 = 357,614.80 : x
  2. Step 2: Convert to fraction form
    638,011.60/956,556.60 = 357,614.80/x
  3. Step 3: Cross multiply
    638,011.60x = 956,556.60 × 357,614.80
  4. Step 4: Simplify right side
    638,011.60x = 342,078,797,197.68
  5. Step 5: Solve for x
    x = 342,078,797,197.68/638,011.60
  6. Step 6: Final answer
    x = 536,163.91

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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.