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Finding the Fourth Proportional to 15,906.90, 23,860.35 and 4,815.30

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Solution

The fourth proportional to 15,906.90, 23,860.35 and 4,815.30 is: 7,222.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,906.90 : 23,860.35 = 4,815.30 : x
  2. Step 2: Convert to fraction form
    15,906.90/23,860.35 = 4,815.30/x
  3. Step 3: Cross multiply
    15,906.90x = 23,860.35 × 4,815.30
  4. Step 4: Simplify right side
    15,906.90x = 114,894,743.36
  5. Step 5: Solve for x
    x = 114,894,743.36/15,906.90
  6. Step 6: Final answer
    x = 7,222.95

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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.