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Finding the Fourth Proportional to 115,751.68, 159,745.24 and 64,769.25

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Solution

The fourth proportional to 115,751.68, 159,745.24 and 64,769.25 is: 89,386.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,751.68 : 159,745.24 = 64,769.25 : x
  2. Step 2: Convert to fraction form
    115,751.68/159,745.24 = 64,769.25/x
  3. Step 3: Cross multiply
    115,751.68x = 159,745.24 × 64,769.25
  4. Step 4: Simplify right side
    115,751.68x = 10,346,579,385.87
  5. Step 5: Solve for x
    x = 10,346,579,385.87/115,751.68
  6. Step 6: Final answer
    x = 89,386.00

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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.