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Finding the Fourth Proportional to 112,751.58, 169,189.29 and 65,424.54

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Solution

The fourth proportional to 112,751.58, 169,189.29 and 65,424.54 is: 98,172.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,751.58 : 169,189.29 = 65,424.54 : x
  2. Step 2: Convert to fraction form
    112,751.58/169,189.29 = 65,424.54/x
  3. Step 3: Cross multiply
    112,751.58x = 169,189.29 × 65,424.54
  4. Step 4: Simplify right side
    112,751.58x = 11,069,131,471.18
  5. Step 5: Solve for x
    x = 11,069,131,471.18/112,751.58
  6. Step 6: Final answer
    x = 98,172.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.