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Finding the Fourth Proportional to 18,366.63, 25,345.94 and 10,914.63

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Solution

The fourth proportional to 18,366.63, 25,345.94 and 10,914.63 is: 15,062.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,366.63 : 25,345.94 = 10,914.63 : x
  2. Step 2: Convert to fraction form
    18,366.63/25,345.94 = 10,914.63/x
  3. Step 3: Cross multiply
    18,366.63x = 25,345.94 × 10,914.63
  4. Step 4: Simplify right side
    18,366.63x = 276,641,557.10
  5. Step 5: Solve for x
    x = 276,641,557.10/18,366.63
  6. Step 6: Final answer
    x = 15,062.18

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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.