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Finding the Fourth Proportional to 93,251.37, 128,686.91 and 50,809.91

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Solution

The fourth proportional to 93,251.37, 128,686.91 and 50,809.91 is: 70,117.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,251.37 : 128,686.91 = 50,809.91 : x
  2. Step 2: Convert to fraction form
    93,251.37/128,686.91 = 50,809.91/x
  3. Step 3: Cross multiply
    93,251.37x = 128,686.91 × 50,809.91
  4. Step 4: Simplify right side
    93,251.37x = 6,538,569,417.79
  5. Step 5: Solve for x
    x = 6,538,569,417.79/93,251.37
  6. Step 6: Final answer
    x = 70,117.68

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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.