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Finding the Fourth Proportional to 18,603.48, 25,665.49 and 10,641.39

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Solution

The fourth proportional to 18,603.48, 25,665.49 and 10,641.39 is: 14,680.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.48 : 25,665.49 = 10,641.39 : x
  2. Step 2: Convert to fraction form
    18,603.48/25,665.49 = 10,641.39/x
  3. Step 3: Cross multiply
    18,603.48x = 25,665.49 × 10,641.39
  4. Step 4: Simplify right side
    18,603.48x = 273,116,488.63
  5. Step 5: Solve for x
    x = 273,116,488.63/18,603.48
  6. Step 6: Final answer
    x = 14,680.94

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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.