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Finding the Fourth Proportional to 106,787.60, 160,195.80 and 36,688.40

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Solution

The fourth proportional to 106,787.60, 160,195.80 and 36,688.40 is: 55,037.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,787.60 : 160,195.80 = 36,688.40 : x
  2. Step 2: Convert to fraction form
    106,787.60/160,195.80 = 36,688.40/x
  3. Step 3: Cross multiply
    106,787.60x = 160,195.80 × 36,688.40
  4. Step 4: Simplify right side
    106,787.60x = 5,877,327,588.72
  5. Step 5: Solve for x
    x = 5,877,327,588.72/106,787.60
  6. Step 6: Final answer
    x = 55,037.55

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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.