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Finding the Fourth Proportional to 117,842.17, 162,621.90 and 64,126.94

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Solution

The fourth proportional to 117,842.17, 162,621.90 and 64,126.94 is: 88,495.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,842.17 : 162,621.90 = 64,126.94 : x
  2. Step 2: Convert to fraction form
    117,842.17/162,621.90 = 64,126.94/x
  3. Step 3: Cross multiply
    117,842.17x = 162,621.90 × 64,126.94
  4. Step 4: Simplify right side
    117,842.17x = 10,428,445,105.98
  5. Step 5: Solve for x
    x = 10,428,445,105.98/117,842.17
  6. Step 6: Final answer
    x = 88,495.02

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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.