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Finding the Fourth Proportional to 61,905.96, 85,428.90 and 33,611.40

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Solution

The fourth proportional to 61,905.96, 85,428.90 and 33,611.40 is: 46,383.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,905.96 : 85,428.90 = 33,611.40 : x
  2. Step 2: Convert to fraction form
    61,905.96/85,428.90 = 33,611.40/x
  3. Step 3: Cross multiply
    61,905.96x = 85,428.90 × 33,611.40
  4. Step 4: Simplify right side
    61,905.96x = 2,871,384,929.46
  5. Step 5: Solve for x
    x = 2,871,384,929.46/61,905.96
  6. Step 6: Final answer
    x = 46,383.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.