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Finding the Fourth Proportional to 113,653.29, 170,537.51 and 75,728.48

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Solution

The fourth proportional to 113,653.29, 170,537.51 and 75,728.48 is: 113,631.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,653.29 : 170,537.51 = 75,728.48 : x
  2. Step 2: Convert to fraction form
    113,653.29/170,537.51 = 75,728.48/x
  3. Step 3: Cross multiply
    113,653.29x = 170,537.51 × 75,728.48
  4. Step 4: Simplify right side
    113,653.29x = 12,914,546,415.28
  5. Step 5: Solve for x
    x = 12,914,546,415.28/113,653.29
  6. Step 6: Final answer
    x = 113,631.08

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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.