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Finding the Fourth Proportional to 18,835.16, 25,978.20 and 13,797.56

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Solution

The fourth proportional to 18,835.16, 25,978.20 and 13,797.56 is: 19,030.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,835.16 : 25,978.20 = 13,797.56 : x
  2. Step 2: Convert to fraction form
    18,835.16/25,978.20 = 13,797.56/x
  3. Step 3: Cross multiply
    18,835.16x = 25,978.20 × 13,797.56
  4. Step 4: Simplify right side
    18,835.16x = 358,435,773.19
  5. Step 5: Solve for x
    x = 358,435,773.19/18,835.16
  6. Step 6: Final answer
    x = 19,030.14

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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.