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Finding the Fourth Proportional to 93,904.31, 129,564.81 and 55,672.80

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Solution

The fourth proportional to 93,904.31, 129,564.81 and 55,672.80 is: 76,814.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,904.31 : 129,564.81 = 55,672.80 : x
  2. Step 2: Convert to fraction form
    93,904.31/129,564.81 = 55,672.80/x
  3. Step 3: Cross multiply
    93,904.31x = 129,564.81 × 55,672.80
  4. Step 4: Simplify right side
    93,904.31x = 7,213,235,754.17
  5. Step 5: Solve for x
    x = 7,213,235,754.17/93,904.31
  6. Step 6: Final answer
    x = 76,814.75

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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.