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Finding the Fourth Proportional to 100,884.61, 139,097.41 and 63,093.25

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Solution

The fourth proportional to 100,884.61, 139,097.41 and 63,093.25 is: 86,991.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,884.61 : 139,097.41 = 63,093.25 : x
  2. Step 2: Convert to fraction form
    100,884.61/139,097.41 = 63,093.25/x
  3. Step 3: Cross multiply
    100,884.61x = 139,097.41 × 63,093.25
  4. Step 4: Simplify right side
    100,884.61x = 8,776,107,663.48
  5. Step 5: Solve for x
    x = 8,776,107,663.48/100,884.61
  6. Step 6: Final answer
    x = 86,991.54

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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.