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Finding the Fourth Proportional to 117,157.96, 161,677.70 and 63,442.98

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Solution

The fourth proportional to 117,157.96, 161,677.70 and 63,442.98 is: 87,551.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,157.96 : 161,677.70 = 63,442.98 : x
  2. Step 2: Convert to fraction form
    117,157.96/161,677.70 = 63,442.98/x
  3. Step 3: Cross multiply
    117,157.96x = 161,677.70 × 63,442.98
  4. Step 4: Simplify right side
    117,157.96x = 10,257,315,087.55
  5. Step 5: Solve for x
    x = 10,257,315,087.55/117,157.96
  6. Step 6: Final answer
    x = 87,551.16

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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.