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Finding the Fourth Proportional to 40,906.84, 61,351.08 and 15,938.32

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Solution

The fourth proportional to 40,906.84, 61,351.08 and 15,938.32 is: 23,903.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,906.84 : 61,351.08 = 15,938.32 : x
  2. Step 2: Convert to fraction form
    40,906.84/61,351.08 = 15,938.32/x
  3. Step 3: Cross multiply
    40,906.84x = 61,351.08 × 15,938.32
  4. Step 4: Simplify right side
    40,906.84x = 977,833,145.39
  5. Step 5: Solve for x
    x = 977,833,145.39/40,906.84
  6. Step 6: Final answer
    x = 23,903.90

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1.5x scale

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.