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Finding the Fourth Proportional to 132,616.63, 183,013.28 and 72,189.01

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Solution

The fourth proportional to 132,616.63, 183,013.28 and 72,189.01 is: 99,622.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,616.63 : 183,013.28 = 72,189.01 : x
  2. Step 2: Convert to fraction form
    132,616.63/183,013.28 = 72,189.01/x
  3. Step 3: Cross multiply
    132,616.63x = 183,013.28 × 72,189.01
  4. Step 4: Simplify right side
    132,616.63x = 13,211,546,952.28
  5. Step 5: Solve for x
    x = 13,211,546,952.28/132,616.63
  6. Step 6: Final answer
    x = 99,622.10

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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.