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Finding the Fourth Proportional to 98,954.16, 136,464.12 and 63,167.28

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Solution

The fourth proportional to 98,954.16, 136,464.12 and 63,167.28 is: 87,111.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,954.16 : 136,464.12 = 63,167.28 : x
  2. Step 2: Convert to fraction form
    98,954.16/136,464.12 = 63,167.28/x
  3. Step 3: Cross multiply
    98,954.16x = 136,464.12 × 63,167.28
  4. Step 4: Simplify right side
    98,954.16x = 8,620,067,277.99
  5. Step 5: Solve for x
    x = 8,620,067,277.99/98,954.16
  6. Step 6: Final answer
    x = 87,111.72

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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.