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Finding the Fourth Proportional to 618,726.88, 927,939.04 and 197,915.68

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Solution

The fourth proportional to 618,726.88, 927,939.04 and 197,915.68 is: 296,825.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,726.88 : 927,939.04 = 197,915.68 : x
  2. Step 2: Convert to fraction form
    618,726.88/927,939.04 = 197,915.68/x
  3. Step 3: Cross multiply
    618,726.88x = 927,939.04 × 197,915.68
  4. Step 4: Simplify right side
    618,726.88x = 183,653,686,100.15
  5. Step 5: Solve for x
    x = 183,653,686,100.15/618,726.88
  6. Step 6: Final answer
    x = 296,825.13

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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.