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Finding the Fourth Proportional to 92,379.47, 138,526.14 and 47,994.31

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Solution

The fourth proportional to 92,379.47, 138,526.14 and 47,994.31 is: 71,969.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,379.47 : 138,526.14 = 47,994.31 : x
  2. Step 2: Convert to fraction form
    92,379.47/138,526.14 = 47,994.31/x
  3. Step 3: Cross multiply
    92,379.47x = 138,526.14 × 47,994.31
  4. Step 4: Simplify right side
    92,379.47x = 6,648,466,334.81
  5. Step 5: Solve for x
    x = 6,648,466,334.81/92,379.47
  6. Step 6: Final answer
    x = 71,969.09

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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.