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Finding the Fourth Proportional to 11,775.18, 16,242.99 and 7,351.50

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Solution

The fourth proportional to 11,775.18, 16,242.99 and 7,351.50 is: 10,140.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,775.18 : 16,242.99 = 7,351.50 : x
  2. Step 2: Convert to fraction form
    11,775.18/16,242.99 = 7,351.50/x
  3. Step 3: Cross multiply
    11,775.18x = 16,242.99 × 7,351.50
  4. Step 4: Simplify right side
    11,775.18x = 119,410,340.99
  5. Step 5: Solve for x
    x = 119,410,340.99/11,775.18
  6. Step 6: Final answer
    x = 10,140.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.