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Finding the Fourth Proportional to 76,897.87, 106,119.08 and 43,363.87

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Solution

The fourth proportional to 76,897.87, 106,119.08 and 43,363.87 is: 59,842.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,897.87 : 106,119.08 = 43,363.87 : x
  2. Step 2: Convert to fraction form
    76,897.87/106,119.08 = 43,363.87/x
  3. Step 3: Cross multiply
    76,897.87x = 106,119.08 × 43,363.87
  4. Step 4: Simplify right side
    76,897.87x = 4,601,733,989.64
  5. Step 5: Solve for x
    x = 4,601,733,989.64/76,897.87
  6. Step 6: Final answer
    x = 59,842.15

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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.