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Finding the Fourth Proportional to 92,904.44, 128,228.49 and 61,076.30

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Solution

The fourth proportional to 92,904.44, 128,228.49 and 61,076.30 is: 84,298.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,904.44 : 128,228.49 = 61,076.30 : x
  2. Step 2: Convert to fraction form
    92,904.44/128,228.49 = 61,076.30/x
  3. Step 3: Cross multiply
    92,904.44x = 128,228.49 × 61,076.30
  4. Step 4: Simplify right side
    92,904.44x = 7,831,721,082.64
  5. Step 5: Solve for x
    x = 7,831,721,082.64/92,904.44
  6. Step 6: Final answer
    x = 84,298.68

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Why These Related Problems?

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