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Finding the Fourth Proportional to 93,935.81, 129,636.72 and 55,717.98

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Solution

The fourth proportional to 93,935.81, 129,636.72 and 55,717.98 is: 76,893.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,935.81 : 129,636.72 = 55,717.98 : x
  2. Step 2: Convert to fraction form
    93,935.81/129,636.72 = 55,717.98/x
  3. Step 3: Cross multiply
    93,935.81x = 129,636.72 × 55,717.98
  4. Step 4: Simplify right side
    93,935.81x = 7,223,096,172.23
  5. Step 5: Solve for x
    x = 7,223,096,172.23/93,935.81
  6. Step 6: Final answer
    x = 76,893.96

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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.