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Finding the Fourth Proportional to 618,047.90, 927,216.50 and 191,561.43

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Solution

The fourth proportional to 618,047.90, 927,216.50 and 191,561.43 is: 287,386.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,047.90 : 927,216.50 = 191,561.43 : x
  2. Step 2: Convert to fraction form
    618,047.90/927,216.50 = 191,561.43/x
  3. Step 3: Cross multiply
    618,047.90x = 927,216.50 × 191,561.43
  4. Step 4: Simplify right side
    618,047.90x = 177,618,917,701.79
  5. Step 5: Solve for x
    x = 177,618,917,701.79/618,047.90
  6. Step 6: Final answer
    x = 287,386.98

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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.