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Finding the Fourth Proportional to 115,392.15, 172,775.43 and 59,871.51

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Solution

The fourth proportional to 115,392.15, 172,775.43 and 59,871.51 is: 89,644.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,392.15 : 172,775.43 = 59,871.51 : x
  2. Step 2: Convert to fraction form
    115,392.15/172,775.43 = 59,871.51/x
  3. Step 3: Cross multiply
    115,392.15x = 172,775.43 × 59,871.51
  4. Step 4: Simplify right side
    115,392.15x = 10,344,325,885.00
  5. Step 5: Solve for x
    x = 10,344,325,885.00/115,392.15
  6. Step 6: Final answer
    x = 89,644.97

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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.