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Finding the Fourth Proportional to 71,919.09, 99,246.06 and 45,076.10

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Solution

The fourth proportional to 71,919.09, 99,246.06 and 45,076.10 is: 62,203.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,919.09 : 99,246.06 = 45,076.10 : x
  2. Step 2: Convert to fraction form
    71,919.09/99,246.06 = 45,076.10/x
  3. Step 3: Cross multiply
    71,919.09x = 99,246.06 × 45,076.10
  4. Step 4: Simplify right side
    71,919.09x = 4,473,624,828.94
  5. Step 5: Solve for x
    x = 4,473,624,828.94/71,919.09
  6. Step 6: Final answer
    x = 62,203.58

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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.