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Finding the Fourth Proportional to 93,414, 128,911.35 and 59,880

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Solution

The fourth proportional to 93,414, 128,911.35 and 59,880 is: 82,634.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,414 : 128,911.35 = 59,880 : x
  2. Step 2: Convert to fraction form
    93,414/128,911.35 = 59,880/x
  3. Step 3: Cross multiply
    93,414x = 128,911.35 × 59,880
  4. Step 4: Simplify right side
    93,414x = 7,719,211,638
  5. Step 5: Solve for x
    x = 7,719,211,638/93,414
  6. Step 6: Final answer
    x = 82,634.42

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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.