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Finding the Fourth Proportional to 109,056.98, 150,503.97 and 61,325.30

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Solution

The fourth proportional to 109,056.98, 150,503.97 and 61,325.30 is: 84,631.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,056.98 : 150,503.97 = 61,325.30 : x
  2. Step 2: Convert to fraction form
    109,056.98/150,503.97 = 61,325.30/x
  3. Step 3: Cross multiply
    109,056.98x = 150,503.97 × 61,325.30
  4. Step 4: Simplify right side
    109,056.98x = 9,229,701,111.44
  5. Step 5: Solve for x
    x = 9,229,701,111.44/109,056.98
  6. Step 6: Final answer
    x = 84,631.92

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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.