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Finding the Fourth Proportional to 5,174.46, 7,724.16 and 4,788.99

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Solution

The fourth proportional to 5,174.46, 7,724.16 and 4,788.99 is: 7,148.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.46 : 7,724.16 = 4,788.99 : x
  2. Step 2: Convert to fraction form
    5,174.46/7,724.16 = 4,788.99/x
  3. Step 3: Cross multiply
    5,174.46x = 7,724.16 × 4,788.99
  4. Step 4: Simplify right side
    5,174.46x = 36,990,925.00
  5. Step 5: Solve for x
    x = 36,990,925.00/5,174.46
  6. Step 6: Final answer
    x = 7,148.75

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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.