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Finding the Fourth Proportional to 110,964.51, 153,136.68 and 65,668.50

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Solution

The fourth proportional to 110,964.51, 153,136.68 and 65,668.50 is: 90,625.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,964.51 : 153,136.68 = 65,668.50 : x
  2. Step 2: Convert to fraction form
    110,964.51/153,136.68 = 65,668.50/x
  3. Step 3: Cross multiply
    110,964.51x = 153,136.68 × 65,668.50
  4. Step 4: Simplify right side
    110,964.51x = 10,056,256,070.58
  5. Step 5: Solve for x
    x = 10,056,256,070.58/110,964.51
  6. Step 6: Final answer
    x = 90,625.88

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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.