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Finding the Fourth Proportional to 28,603.44, 42,908.04 and 9,881.01

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Solution

The fourth proportional to 28,603.44, 42,908.04 and 9,881.01 is: 14,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.44 : 42,908.04 = 9,881.01 : x
  2. Step 2: Convert to fraction form
    28,603.44/42,908.04 = 9,881.01/x
  3. Step 3: Cross multiply
    28,603.44x = 42,908.04 × 9,881.01
  4. Step 4: Simplify right side
    28,603.44x = 423,974,772.32
  5. Step 5: Solve for x
    x = 423,974,772.32/28,603.44
  6. Step 6: Final answer
    x = 14,822.51

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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.