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Finding the Fourth Proportional to 14,612.54, 21,928.52 and 5,378.54

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Solution

The fourth proportional to 14,612.54, 21,928.52 and 5,378.54 is: 8,071.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,612.54 : 21,928.52 = 5,378.54 : x
  2. Step 2: Convert to fraction form
    14,612.54/21,928.52 = 5,378.54/x
  3. Step 3: Cross multiply
    14,612.54x = 21,928.52 × 5,378.54
  4. Step 4: Simplify right side
    14,612.54x = 117,943,490.23
  5. Step 5: Solve for x
    x = 117,943,490.23/14,612.54
  6. Step 6: Final answer
    x = 8,071.39

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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.