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Finding the Fourth Proportional to 93,937.76, 129,639.33 and 53,664.60

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Solution

The fourth proportional to 93,937.76, 129,639.33 and 53,664.60 is: 74,060.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,937.76 : 129,639.33 = 53,664.60 : x
  2. Step 2: Convert to fraction form
    93,937.76/129,639.33 = 53,664.60/x
  3. Step 3: Cross multiply
    93,937.76x = 129,639.33 × 53,664.60
  4. Step 4: Simplify right side
    93,937.76x = 6,957,042,520.40
  5. Step 5: Solve for x
    x = 6,957,042,520.40/93,937.76
  6. Step 6: Final answer
    x = 74,060.13

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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.