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Finding the Fourth Proportional to 519,318.20, 778,969.20 and 266,452.76

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Solution

The fourth proportional to 519,318.20, 778,969.20 and 266,452.76 is: 399,674.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,318.20 : 778,969.20 = 266,452.76 : x
  2. Step 2: Convert to fraction form
    519,318.20/778,969.20 = 266,452.76/x
  3. Step 3: Cross multiply
    519,318.20x = 778,969.20 × 266,452.76
  4. Step 4: Simplify right side
    519,318.20x = 207,558,493,294.99
  5. Step 5: Solve for x
    x = 207,558,493,294.99/519,318.20
  6. Step 6: Final answer
    x = 399,674.98

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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.