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Finding the Fourth Proportional to 519,808.59, 779,171.00 and 253,202.36

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Solution

The fourth proportional to 519,808.59, 779,171.00 and 253,202.36 is: 379,539.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,808.59 : 779,171.00 = 253,202.36 : x
  2. Step 2: Convert to fraction form
    519,808.59/779,171.00 = 253,202.36/x
  3. Step 3: Cross multiply
    519,808.59x = 779,171.00 × 253,202.36
  4. Step 4: Simplify right side
    519,808.59x = 197,287,930,881.69
  5. Step 5: Solve for x
    x = 197,287,930,881.69/519,808.59
  6. Step 6: Final answer
    x = 379,539.57

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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.