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Finding the Fourth Proportional to 58,487.44, 80,712.62 and 31,630.02

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Solution

The fourth proportional to 58,487.44, 80,712.62 and 31,630.02 is: 43,649.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,487.44 : 80,712.62 = 31,630.02 : x
  2. Step 2: Convert to fraction form
    58,487.44/80,712.62 = 31,630.02/x
  3. Step 3: Cross multiply
    58,487.44x = 80,712.62 × 31,630.02
  4. Step 4: Simplify right side
    58,487.44x = 2,552,941,784.85
  5. Step 5: Solve for x
    x = 2,552,941,784.85/58,487.44
  6. Step 6: Final answer
    x = 43,649.40

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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.