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Finding the Fourth Proportional to 78,962.52, 108,987.64 and 44,991.06

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Solution

The fourth proportional to 78,962.52, 108,987.64 and 44,991.06 is: 62,098.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,962.52 : 108,987.64 = 44,991.06 : x
  2. Step 2: Convert to fraction form
    78,962.52/108,987.64 = 44,991.06/x
  3. Step 3: Cross multiply
    78,962.52x = 108,987.64 × 44,991.06
  4. Step 4: Simplify right side
    78,962.52x = 4,903,468,905.56
  5. Step 5: Solve for x
    x = 4,903,468,905.56/78,962.52
  6. Step 6: Final answer
    x = 62,098.69

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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.