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Finding the Fourth Proportional to 91,938.60, 137,924.10 and 32,808.60

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Solution

The fourth proportional to 91,938.60, 137,924.10 and 32,808.60 is: 49,218.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,938.60 : 137,924.10 = 32,808.60 : x
  2. Step 2: Convert to fraction form
    91,938.60/137,924.10 = 32,808.60/x
  3. Step 3: Cross multiply
    91,938.60x = 137,924.10 × 32,808.60
  4. Step 4: Simplify right side
    91,938.60x = 4,525,096,627.26
  5. Step 5: Solve for x
    x = 4,525,096,627.26/91,938.60
  6. Step 6: Final answer
    x = 49,218.68

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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.