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Finding the Fourth Proportional to 618,047.65, 927,216.12 and 191,561.18

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Solution

The fourth proportional to 618,047.65, 927,216.12 and 191,561.18 is: 287,386.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,047.65 : 927,216.12 = 191,561.18 : x
  2. Step 2: Convert to fraction form
    618,047.65/927,216.12 = 191,561.18/x
  3. Step 3: Cross multiply
    618,047.65x = 927,216.12 × 191,561.18
  4. Step 4: Simplify right side
    618,047.65x = 177,618,614,062.22
  5. Step 5: Solve for x
    x = 177,618,614,062.22/618,047.65
  6. Step 6: Final answer
    x = 287,386.60

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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.