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Finding the Fourth Proportional to 619,313.40, 929,834.10 and 396,055.80

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Solution

The fourth proportional to 619,313.40, 929,834.10 and 396,055.80 is: 594,636.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,313.40 : 929,834.10 = 396,055.80 : x
  2. Step 2: Convert to fraction form
    619,313.40/929,834.10 = 396,055.80/x
  3. Step 3: Cross multiply
    619,313.40x = 929,834.10 × 396,055.80
  4. Step 4: Simplify right side
    619,313.40x = 368,266,188,342.78
  5. Step 5: Solve for x
    x = 368,266,188,342.78/619,313.40
  6. Step 6: Final answer
    x = 594,636.23

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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.