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Finding the Fourth Proportional to 515,356.90, 773,022.69 and 199,813.91

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Solution

The fourth proportional to 515,356.90, 773,022.69 and 199,813.91 is: 299,715.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,356.90 : 773,022.69 = 199,813.91 : x
  2. Step 2: Convert to fraction form
    515,356.90/773,022.69 = 199,813.91/x
  3. Step 3: Cross multiply
    515,356.90x = 773,022.69 × 199,813.91
  4. Step 4: Simplify right side
    515,356.90x = 154,460,682,342.50
  5. Step 5: Solve for x
    x = 154,460,682,342.50/515,356.90
  6. Step 6: Final answer
    x = 299,715.95

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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.