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Finding the Fourth Proportional to 224,665.30, 336,905.34 and 91,455.40

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Solution

The fourth proportional to 224,665.30, 336,905.34 and 91,455.40 is: 137,145.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,665.30 : 336,905.34 = 91,455.40 : x
  2. Step 2: Convert to fraction form
    224,665.30/336,905.34 = 91,455.40/x
  3. Step 3: Cross multiply
    224,665.30x = 336,905.34 × 91,455.40
  4. Step 4: Simplify right side
    224,665.30x = 30,811,812,631.84
  5. Step 5: Solve for x
    x = 30,811,812,631.84/224,665.30
  6. Step 6: Final answer
    x = 137,145.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.