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Finding the Fourth Proportional to 61,591.76, 92,422.96 and 61,090.64

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Solution

The fourth proportional to 61,591.76, 92,422.96 and 61,090.64 is: 91,670.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,591.76 : 92,422.96 = 61,090.64 : x
  2. Step 2: Convert to fraction form
    61,591.76/92,422.96 = 61,090.64/x
  3. Step 3: Cross multiply
    61,591.76x = 92,422.96 × 61,090.64
  4. Step 4: Simplify right side
    61,591.76x = 5,646,177,777.09
  5. Step 5: Solve for x
    x = 5,646,177,777.09/61,591.76
  6. Step 6: Final answer
    x = 91,670.99

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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.