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Finding the Fourth Proportional to 86,615.16, 119,495.16 and 50,791.92

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Solution

The fourth proportional to 86,615.16, 119,495.16 and 50,791.92 is: 70,073.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,615.16 : 119,495.16 = 50,791.92 : x
  2. Step 2: Convert to fraction form
    86,615.16/119,495.16 = 50,791.92/x
  3. Step 3: Cross multiply
    86,615.16x = 119,495.16 × 50,791.92
  4. Step 4: Simplify right side
    86,615.16x = 6,069,388,607.11
  5. Step 5: Solve for x
    x = 6,069,388,607.11/86,615.16
  6. Step 6: Final answer
    x = 70,073.05

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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.