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Finding the Fourth Proportional to 103,773.76, 143,216.61 and 58,460.64

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Solution

The fourth proportional to 103,773.76, 143,216.61 and 58,460.64 is: 80,680.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,773.76 : 143,216.61 = 58,460.64 : x
  2. Step 2: Convert to fraction form
    103,773.76/143,216.61 = 58,460.64/x
  3. Step 3: Cross multiply
    103,773.76x = 143,216.61 × 58,460.64
  4. Step 4: Simplify right side
    103,773.76x = 8,372,533,922.94
  5. Step 5: Solve for x
    x = 8,372,533,922.94/103,773.76
  6. Step 6: Final answer
    x = 80,680.65

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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.