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Finding the Fourth Proportional to 7,216.53, 9,955 and 4,974.55

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Solution

The fourth proportional to 7,216.53, 9,955 and 4,974.55 is: 6,862.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.53 : 9,955 = 4,974.55 : x
  2. Step 2: Convert to fraction form
    7,216.53/9,955 = 4,974.55/x
  3. Step 3: Cross multiply
    7,216.53x = 9,955 × 4,974.55
  4. Step 4: Simplify right side
    7,216.53x = 49,521,645.25
  5. Step 5: Solve for x
    x = 49,521,645.25/7,216.53
  6. Step 6: Final answer
    x = 6,862.25

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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.