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Finding the Fourth Proportional to 18,756.53, 25,881.13 and 10,797.21

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Solution

The fourth proportional to 18,756.53, 25,881.13 and 10,797.21 is: 14,898.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756.53 : 25,881.13 = 10,797.21 : x
  2. Step 2: Convert to fraction form
    18,756.53/25,881.13 = 10,797.21/x
  3. Step 3: Cross multiply
    18,756.53x = 25,881.13 × 10,797.21
  4. Step 4: Simplify right side
    18,756.53x = 279,444,009.14
  5. Step 5: Solve for x
    x = 279,444,009.14/18,756.53
  6. Step 6: Final answer
    x = 14,898.49

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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.