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Finding the Fourth Proportional to 92,361.86, 138,548.64 and 39,043.90

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Solution

The fourth proportional to 92,361.86, 138,548.64 and 39,043.90 is: 58,568.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,361.86 : 138,548.64 = 39,043.90 : x
  2. Step 2: Convert to fraction form
    92,361.86/138,548.64 = 39,043.90/x
  3. Step 3: Cross multiply
    92,361.86x = 138,548.64 × 39,043.90
  4. Step 4: Simplify right side
    92,361.86x = 5,409,478,948.74
  5. Step 5: Solve for x
    x = 5,409,478,948.74/92,361.86
  6. Step 6: Final answer
    x = 58,568.32

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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.