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Finding the Fourth Proportional to 93,165.12, 139,656.56 and 36,986.56

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Solution

The fourth proportional to 93,165.12, 139,656.56 and 36,986.56 is: 55,443.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,165.12 : 139,656.56 = 36,986.56 : x
  2. Step 2: Convert to fraction form
    93,165.12/139,656.56 = 36,986.56/x
  3. Step 3: Cross multiply
    93,165.12x = 139,656.56 × 36,986.56
  4. Step 4: Simplify right side
    93,165.12x = 5,165,415,201.76
  5. Step 5: Solve for x
    x = 5,165,415,201.76/93,165.12
  6. Step 6: Final answer
    x = 55,443.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.