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Finding the Fourth Proportional to 117,372.74, 161,971.50 and 67,068.50

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Solution

The fourth proportional to 117,372.74, 161,971.50 and 67,068.50 is: 92,552.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,372.74 : 161,971.50 = 67,068.50 : x
  2. Step 2: Convert to fraction form
    117,372.74/161,971.50 = 67,068.50/x
  3. Step 3: Cross multiply
    117,372.74x = 161,971.50 × 67,068.50
  4. Step 4: Simplify right side
    117,372.74x = 10,863,185,547.75
  5. Step 5: Solve for x
    x = 10,863,185,547.75/117,372.74
  6. Step 6: Final answer
    x = 92,552.88

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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.