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Finding the Fourth Proportional to 124,653.32, 172,028.58 and 68,069.96

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Solution

The fourth proportional to 124,653.32, 172,028.58 and 68,069.96 is: 93,940.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,653.32 : 172,028.58 = 68,069.96 : x
  2. Step 2: Convert to fraction form
    124,653.32/172,028.58 = 68,069.96/x
  3. Step 3: Cross multiply
    124,653.32x = 172,028.58 × 68,069.96
  4. Step 4: Simplify right side
    124,653.32x = 11,709,978,559.46
  5. Step 5: Solve for x
    x = 11,709,978,559.46/124,653.32
  6. Step 6: Final answer
    x = 93,940.37

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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.