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Finding the Fourth Proportional to 92,580.60, 138,519.90 and 61,476.60

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Solution

The fourth proportional to 92,580.60, 138,519.90 and 61,476.60 is: 91,981.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,580.60 : 138,519.90 = 61,476.60 : x
  2. Step 2: Convert to fraction form
    92,580.60/138,519.90 = 61,476.60/x
  3. Step 3: Cross multiply
    92,580.60x = 138,519.90 × 61,476.60
  4. Step 4: Simplify right side
    92,580.60x = 8,515,732,484.34
  5. Step 5: Solve for x
    x = 8,515,732,484.34/92,580.60
  6. Step 6: Final answer
    x = 91,981.82

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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.