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Finding the Fourth Proportional to 92,770.11, 128,018.82 and 52,484.56

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Solution

The fourth proportional to 92,770.11, 128,018.82 and 52,484.56 is: 72,426.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,770.11 : 128,018.82 = 52,484.56 : x
  2. Step 2: Convert to fraction form
    92,770.11/128,018.82 = 52,484.56/x
  3. Step 3: Cross multiply
    92,770.11x = 128,018.82 × 52,484.56
  4. Step 4: Simplify right side
    92,770.11x = 6,719,010,799.33
  5. Step 5: Solve for x
    x = 6,719,010,799.33/92,770.11
  6. Step 6: Final answer
    x = 72,426.46

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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.