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Finding the Fourth Proportional to 115,292.65, 159,079.66 and 69,994.48

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Solution

The fourth proportional to 115,292.65, 159,079.66 and 69,994.48 is: 96,577.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,292.65 : 159,079.66 = 69,994.48 : x
  2. Step 2: Convert to fraction form
    115,292.65/159,079.66 = 69,994.48/x
  3. Step 3: Cross multiply
    115,292.65x = 159,079.66 × 69,994.48
  4. Step 4: Simplify right side
    115,292.65x = 11,134,698,080.28
  5. Step 5: Solve for x
    x = 11,134,698,080.28/115,292.65
  6. Step 6: Final answer
    x = 96,577.69

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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.