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Finding the Fourth Proportional to 93,696.86, 129,308.67 and 53,411.57

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Solution

The fourth proportional to 93,696.86, 129,308.67 and 53,411.57 is: 73,711.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,696.86 : 129,308.67 = 53,411.57 : x
  2. Step 2: Convert to fraction form
    93,696.86/129,308.67 = 53,411.57/x
  3. Step 3: Cross multiply
    93,696.86x = 129,308.67 × 53,411.57
  4. Step 4: Simplify right side
    93,696.86x = 6,906,578,432.77
  5. Step 5: Solve for x
    x = 6,906,578,432.77/93,696.86
  6. Step 6: Final answer
    x = 73,711.96

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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.