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Finding the Fourth Proportional to 5,307.84, 7,325.28 and 3,318.48

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Solution

The fourth proportional to 5,307.84, 7,325.28 and 3,318.48 is: 4,579.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,307.84 : 7,325.28 = 3,318.48 : x
  2. Step 2: Convert to fraction form
    5,307.84/7,325.28 = 3,318.48/x
  3. Step 3: Cross multiply
    5,307.84x = 7,325.28 × 3,318.48
  4. Step 4: Simplify right side
    5,307.84x = 24,308,795.17
  5. Step 5: Solve for x
    x = 24,308,795.17/5,307.84
  6. Step 6: Final answer
    x = 4,579.79

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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.