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Finding the Fourth Proportional to 76,078.88, 104,994 and 42,545.12

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Solution

The fourth proportional to 76,078.88, 104,994 and 42,545.12 is: 58,715.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,078.88 : 104,994 = 42,545.12 : x
  2. Step 2: Convert to fraction form
    76,078.88/104,994 = 42,545.12/x
  3. Step 3: Cross multiply
    76,078.88x = 104,994 × 42,545.12
  4. Step 4: Simplify right side
    76,078.88x = 4,466,982,329.28
  5. Step 5: Solve for x
    x = 4,466,982,329.28/76,078.88
  6. Step 6: Final answer
    x = 58,715.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.