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Finding the Fourth Proportional to 98,633.64, 136,104.66 and 56,189.64

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Solution

The fourth proportional to 98,633.64, 136,104.66 and 56,189.64 is: 77,536.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,633.64 : 136,104.66 = 56,189.64 : x
  2. Step 2: Convert to fraction form
    98,633.64/136,104.66 = 56,189.64/x
  3. Step 3: Cross multiply
    98,633.64x = 136,104.66 × 56,189.64
  4. Step 4: Simplify right side
    98,633.64x = 7,647,671,847.72
  5. Step 5: Solve for x
    x = 7,647,671,847.72/98,633.64
  6. Step 6: Final answer
    x = 77,536.14

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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.