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Finding the Fourth Proportional to 101,193.48, 139,736.88 and 63,018.58

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Solution

The fourth proportional to 101,193.48, 139,736.88 and 63,018.58 is: 87,021.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,193.48 : 139,736.88 = 63,018.58 : x
  2. Step 2: Convert to fraction form
    101,193.48/139,736.88 = 63,018.58/x
  3. Step 3: Cross multiply
    101,193.48x = 139,736.88 × 63,018.58
  4. Step 4: Simplify right side
    101,193.48x = 8,806,019,751.23
  5. Step 5: Solve for x
    x = 8,806,019,751.23/101,193.48
  6. Step 6: Final answer
    x = 87,021.61

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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.