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Finding the Fourth Proportional to 110,987.52, 153,159.36 and 67,983.36

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Solution

The fourth proportional to 110,987.52, 153,159.36 and 67,983.36 is: 93,814.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,987.52 : 153,159.36 = 67,983.36 : x
  2. Step 2: Convert to fraction form
    110,987.52/153,159.36 = 67,983.36/x
  3. Step 3: Cross multiply
    110,987.52x = 153,159.36 × 67,983.36
  4. Step 4: Simplify right side
    110,987.52x = 10,412,287,908.25
  5. Step 5: Solve for x
    x = 10,412,287,908.25/110,987.52
  6. Step 6: Final answer
    x = 93,814.94

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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.