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Finding the Fourth Proportional to 18,398.36, 25,389.84 and 10,014.88

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Solution

The fourth proportional to 18,398.36, 25,389.84 and 10,014.88 is: 13,820.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.36 : 25,389.84 = 10,014.88 : x
  2. Step 2: Convert to fraction form
    18,398.36/25,389.84 = 10,014.88/x
  3. Step 3: Cross multiply
    18,398.36x = 25,389.84 × 10,014.88
  4. Step 4: Simplify right side
    18,398.36x = 254,276,200.82
  5. Step 5: Solve for x
    x = 254,276,200.82/18,398.36
  6. Step 6: Final answer
    x = 13,820.59

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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.