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Finding the Fourth Proportional to 18,802.73, 25,948.28 and 10,419.23

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Solution

The fourth proportional to 18,802.73, 25,948.28 and 10,419.23 is: 14,378.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.73 : 25,948.28 = 10,419.23 : x
  2. Step 2: Convert to fraction form
    18,802.73/25,948.28 = 10,419.23/x
  3. Step 3: Cross multiply
    18,802.73x = 25,948.28 × 10,419.23
  4. Step 4: Simplify right side
    18,802.73x = 270,360,993.73
  5. Step 5: Solve for x
    x = 270,360,993.73/18,802.73
  6. Step 6: Final answer
    x = 14,378.82

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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.