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Finding the Fourth Proportional to 73,372.40, 110,058.60 and 47,128.40

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Solution

The fourth proportional to 73,372.40, 110,058.60 and 47,128.40 is: 70,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,372.40 : 110,058.60 = 47,128.40 : x
  2. Step 2: Convert to fraction form
    73,372.40/110,058.60 = 47,128.40/x
  3. Step 3: Cross multiply
    73,372.40x = 110,058.60 × 47,128.40
  4. Step 4: Simplify right side
    73,372.40x = 5,186,885,724.24
  5. Step 5: Solve for x
    x = 5,186,885,724.24/73,372.40
  6. Step 6: Final answer
    x = 70,692.60

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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.