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Finding the Fourth Proportional to 18,321.19, 25,283.24 and 10,363.24

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Solution

The fourth proportional to 18,321.19, 25,283.24 and 10,363.24 is: 14,301.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.19 : 25,283.24 = 10,363.24 : x
  2. Step 2: Convert to fraction form
    18,321.19/25,283.24 = 10,363.24/x
  3. Step 3: Cross multiply
    18,321.19x = 25,283.24 × 10,363.24
  4. Step 4: Simplify right side
    18,321.19x = 262,016,302.75
  5. Step 5: Solve for x
    x = 262,016,302.75/18,321.19
  6. Step 6: Final answer
    x = 14,301.27

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Double scale
Find fourth proportional to 18,322.19, 25,284.62 and 10,364.24
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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.