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Finding the Fourth Proportional to 6,955.52, 10,355.20 and 6,920.96

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Solution

The fourth proportional to 6,955.52, 10,355.20 and 6,920.96 is: 10,303.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,955.52 : 10,355.20 = 6,920.96 : x
  2. Step 2: Convert to fraction form
    6,955.52/10,355.20 = 6,920.96/x
  3. Step 3: Cross multiply
    6,955.52x = 10,355.20 × 6,920.96
  4. Step 4: Simplify right side
    6,955.52x = 71,667,924.99
  5. Step 5: Solve for x
    x = 71,667,924.99/6,955.52
  6. Step 6: Final answer
    x = 10,303.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.