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Finding the Fourth Proportional to 93,270.40, 128,709.40 and 50,828.02

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Solution

The fourth proportional to 93,270.40, 128,709.40 and 50,828.02 is: 70,140.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,270.40 : 128,709.40 = 50,828.02 : x
  2. Step 2: Convert to fraction form
    93,270.40/128,709.40 = 50,828.02/x
  3. Step 3: Cross multiply
    93,270.40x = 128,709.40 × 50,828.02
  4. Step 4: Simplify right side
    93,270.40x = 6,542,043,957.39
  5. Step 5: Solve for x
    x = 6,542,043,957.39/93,270.40
  6. Step 6: Final answer
    x = 70,140.62

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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.