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Finding the Fourth Proportional to 93,270.76, 128,713.08 and 50,829.28

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Solution

The fourth proportional to 93,270.76, 128,713.08 and 50,829.28 is: 70,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,270.76 : 128,713.08 = 50,829.28 : x
  2. Step 2: Convert to fraction form
    93,270.76/128,713.08 = 50,829.28/x
  3. Step 3: Cross multiply
    93,270.76x = 128,713.08 × 50,829.28
  4. Step 4: Simplify right side
    93,270.76x = 6,542,393,182.98
  5. Step 5: Solve for x
    x = 6,542,393,182.98/93,270.76
  6. Step 6: Final answer
    x = 70,144.10

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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.