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Finding the Fourth Proportional to 18,603.10, 27,904.65 and 4,752.10

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Solution

The fourth proportional to 18,603.10, 27,904.65 and 4,752.10 is: 7,128.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.10 : 27,904.65 = 4,752.10 : x
  2. Step 2: Convert to fraction form
    18,603.10/27,904.65 = 4,752.10/x
  3. Step 3: Cross multiply
    18,603.10x = 27,904.65 × 4,752.10
  4. Step 4: Simplify right side
    18,603.10x = 132,605,687.27
  5. Step 5: Solve for x
    x = 132,605,687.27/18,603.10
  6. Step 6: Final answer
    x = 7,128.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.