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Finding the Fourth Proportional to 18,696.66, 25,800.07 and 10,521.46

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Solution

The fourth proportional to 18,696.66, 25,800.07 and 10,521.46 is: 14,518.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,696.66 : 25,800.07 = 10,521.46 : x
  2. Step 2: Convert to fraction form
    18,696.66/25,800.07 = 10,521.46/x
  3. Step 3: Cross multiply
    18,696.66x = 25,800.07 × 10,521.46
  4. Step 4: Simplify right side
    18,696.66x = 271,454,430.18
  5. Step 5: Solve for x
    x = 271,454,430.18/18,696.66
  6. Step 6: Final answer
    x = 14,518.87

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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.