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Finding the Fourth Proportional to 98,668.59, 136,175.99 and 55,656.91

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Solution

The fourth proportional to 98,668.59, 136,175.99 and 55,656.91 is: 76,814.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,668.59 : 136,175.99 = 55,656.91 : x
  2. Step 2: Convert to fraction form
    98,668.59/136,175.99 = 55,656.91/x
  3. Step 3: Cross multiply
    98,668.59x = 136,175.99 × 55,656.91
  4. Step 4: Simplify right side
    98,668.59x = 7,579,134,819.59
  5. Step 5: Solve for x
    x = 7,579,134,819.59/98,668.59
  6. Step 6: Final answer
    x = 76,814.06

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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.