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Finding the Fourth Proportional to 93,959.76, 129,661.83 and 53,672.70

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Solution

The fourth proportional to 93,959.76, 129,661.83 and 53,672.70 is: 74,066.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,959.76 : 129,661.83 = 53,672.70 : x
  2. Step 2: Convert to fraction form
    93,959.76/129,661.83 = 53,672.70/x
  3. Step 3: Cross multiply
    93,959.76x = 129,661.83 × 53,672.70
  4. Step 4: Simplify right side
    93,959.76x = 6,959,300,503.04
  5. Step 5: Solve for x
    x = 6,959,300,503.04/93,959.76
  6. Step 6: Final answer
    x = 74,066.82

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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.