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Finding the Fourth Proportional to 92,701.60, 138,671.71 and 74,018.12

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Solution

The fourth proportional to 92,701.60, 138,671.71 and 74,018.12 is: 110,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,701.60 : 138,671.71 = 74,018.12 : x
  2. Step 2: Convert to fraction form
    92,701.60/138,671.71 = 74,018.12/x
  3. Step 3: Cross multiply
    92,701.60x = 138,671.71 × 74,018.12
  4. Step 4: Simplify right side
    92,701.60x = 10,264,219,433.02
  5. Step 5: Solve for x
    x = 10,264,219,433.02/92,701.60
  6. Step 6: Final answer
    x = 110,723.22

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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.