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Finding the Fourth Proportional to 18,805.77, 25,897.28 and 17,603.78

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Solution

The fourth proportional to 18,805.77, 25,897.28 and 17,603.78 is: 24,242.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.77 : 25,897.28 = 17,603.78 : x
  2. Step 2: Convert to fraction form
    18,805.77/25,897.28 = 17,603.78/x
  3. Step 3: Cross multiply
    18,805.77x = 25,897.28 × 17,603.78
  4. Step 4: Simplify right side
    18,805.77x = 455,889,802.21
  5. Step 5: Solve for x
    x = 455,889,802.21/18,805.77
  6. Step 6: Final answer
    x = 24,242.02

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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.