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Finding the Fourth Proportional to 492,265.79, 738,398.64 and 118,288.79

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Solution

The fourth proportional to 492,265.79, 738,398.64 and 118,288.79 is: 177,433.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,265.79 : 738,398.64 = 118,288.79 : x
  2. Step 2: Convert to fraction form
    492,265.79/738,398.64 = 118,288.79/x
  3. Step 3: Cross multiply
    492,265.79x = 738,398.64 × 118,288.79
  4. Step 4: Simplify right side
    492,265.79x = 87,344,277,971.25
  5. Step 5: Solve for x
    x = 87,344,277,971.25/492,265.79
  6. Step 6: Final answer
    x = 177,433.17

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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.