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Finding the Fourth Proportional to 117,699.72, 162,426.66 and 63,984.74

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Solution

The fourth proportional to 117,699.72, 162,426.66 and 63,984.74 is: 88,299.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,699.72 : 162,426.66 = 63,984.74 : x
  2. Step 2: Convert to fraction form
    117,699.72/162,426.66 = 63,984.74/x
  3. Step 3: Cross multiply
    117,699.72x = 162,426.66 × 63,984.74
  4. Step 4: Simplify right side
    117,699.72x = 10,392,827,609.17
  5. Step 5: Solve for x
    x = 10,392,827,609.17/117,699.72
  6. Step 6: Final answer
    x = 88,299.51

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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.