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Finding the Fourth Proportional to 76,552.08, 105,693.42 and 68,460.58

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Solution

The fourth proportional to 76,552.08, 105,693.42 and 68,460.58 is: 94,521.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,552.08 : 105,693.42 = 68,460.58 : x
  2. Step 2: Convert to fraction form
    76,552.08/105,693.42 = 68,460.58/x
  3. Step 3: Cross multiply
    76,552.08x = 105,693.42 × 68,460.58
  4. Step 4: Simplify right side
    76,552.08x = 7,235,832,835.38
  5. Step 5: Solve for x
    x = 7,235,832,835.38/76,552.08
  6. Step 6: Final answer
    x = 94,521.71

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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.