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Finding the Fourth Proportional to 619.66, 923.51 and 614.56

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Solution

The fourth proportional to 619.66, 923.51 and 614.56 is: 915.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.66 : 923.51 = 614.56 : x
  2. Step 2: Convert to fraction form
    619.66/923.51 = 614.56/x
  3. Step 3: Cross multiply
    619.66x = 923.51 × 614.56
  4. Step 4: Simplify right side
    619.66x = 567,552.31
  5. Step 5: Solve for x
    x = 567,552.31/619.66
  6. Step 6: Final answer
    x = 915.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.