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Finding the Fourth Proportional to 92,620.60, 138,916.35 and 29,432.40

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Solution

The fourth proportional to 92,620.60, 138,916.35 and 29,432.40 is: 44,143.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,620.60 : 138,916.35 = 29,432.40 : x
  2. Step 2: Convert to fraction form
    92,620.60/138,916.35 = 29,432.40/x
  3. Step 3: Cross multiply
    92,620.60x = 138,916.35 × 29,432.40
  4. Step 4: Simplify right side
    92,620.60x = 4,088,641,579.74
  5. Step 5: Solve for x
    x = 4,088,641,579.74/92,620.60
  6. Step 6: Final answer
    x = 44,143.98

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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.