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Finding the Fourth Proportional to 519,662.28, 779,515.26 and 253,646.54

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Solution

The fourth proportional to 519,662.28, 779,515.26 and 253,646.54 is: 380,480.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,662.28 : 779,515.26 = 253,646.54 : x
  2. Step 2: Convert to fraction form
    519,662.28/779,515.26 = 253,646.54/x
  3. Step 3: Cross multiply
    519,662.28x = 779,515.26 × 253,646.54
  4. Step 4: Simplify right side
    519,662.28x = 197,721,344,678.62
  5. Step 5: Solve for x
    x = 197,721,344,678.62/519,662.28
  6. Step 6: Final answer
    x = 380,480.46

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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.