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Finding the Fourth Proportional to 92,691, 139,056.48 and 37,287

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Solution

The fourth proportional to 92,691, 139,056.48 and 37,287 is: 55,938.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,691 : 139,056.48 = 37,287 : x
  2. Step 2: Convert to fraction form
    92,691/139,056.48 = 37,287/x
  3. Step 3: Cross multiply
    92,691x = 139,056.48 × 37,287
  4. Step 4: Simplify right side
    92,691x = 5,184,998,969.76
  5. Step 5: Solve for x
    x = 5,184,998,969.76/92,691
  6. Step 6: Final answer
    x = 55,938.54

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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.