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Finding the Fourth Proportional to 18,607.82, 25,678.04 and 11,053.94

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Solution

The fourth proportional to 18,607.82, 25,678.04 and 11,053.94 is: 15,253.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.82 : 25,678.04 = 11,053.94 : x
  2. Step 2: Convert to fraction form
    18,607.82/25,678.04 = 11,053.94/x
  3. Step 3: Cross multiply
    18,607.82x = 25,678.04 × 11,053.94
  4. Step 4: Simplify right side
    18,607.82x = 283,843,329.82
  5. Step 5: Solve for x
    x = 283,843,329.82/18,607.82
  6. Step 6: Final answer
    x = 15,253.98

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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.