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Finding the Fourth Proportional to 92,187.96, 138,325 and 47,790.52

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Solution

The fourth proportional to 92,187.96, 138,325 and 47,790.52 is: 71,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,187.96 : 138,325 = 47,790.52 : x
  2. Step 2: Convert to fraction form
    92,187.96/138,325 = 47,790.52/x
  3. Step 3: Cross multiply
    92,187.96x = 138,325 × 47,790.52
  4. Step 4: Simplify right side
    92,187.96x = 6,610,623,679
  5. Step 5: Solve for x
    x = 6,610,623,679/92,187.96
  6. Step 6: Final answer
    x = 71,708.10

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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.