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Finding the Fourth Proportional to 117,312.79, 161,891.76 and 63,597.76

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Solution

The fourth proportional to 117,312.79, 161,891.76 and 63,597.76 is: 87,764.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,312.79 : 161,891.76 = 63,597.76 : x
  2. Step 2: Convert to fraction form
    117,312.79/161,891.76 = 63,597.76/x
  3. Step 3: Cross multiply
    117,312.79x = 161,891.76 × 63,597.76
  4. Step 4: Simplify right side
    117,312.79x = 10,295,953,298.46
  5. Step 5: Solve for x
    x = 10,295,953,298.46/117,312.79
  6. Step 6: Final answer
    x = 87,764.97

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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.