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Finding the Fourth Proportional to 2,315.14, 3,472.71 and 777.22

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Solution

The fourth proportional to 2,315.14, 3,472.71 and 777.22 is: 1,165.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.14 : 3,472.71 = 777.22 : x
  2. Step 2: Convert to fraction form
    2,315.14/3,472.71 = 777.22/x
  3. Step 3: Cross multiply
    2,315.14x = 3,472.71 × 777.22
  4. Step 4: Simplify right side
    2,315.14x = 2,699,059.67
  5. Step 5: Solve for x
    x = 2,699,059.67/2,315.14
  6. Step 6: Final answer
    x = 1,165.83

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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.