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Finding the Fourth Proportional to 618,784.56, 928,177.65 and 169,509.38

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Solution

The fourth proportional to 618,784.56, 928,177.65 and 169,509.38 is: 254,264.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,784.56 : 928,177.65 = 169,509.38 : x
  2. Step 2: Convert to fraction form
    618,784.56/928,177.65 = 169,509.38/x
  3. Step 3: Cross multiply
    618,784.56x = 928,177.65 × 169,509.38
  4. Step 4: Simplify right side
    618,784.56x = 157,334,813,340.47
  5. Step 5: Solve for x
    x = 157,334,813,340.47/618,784.56
  6. Step 6: Final answer
    x = 254,264.28

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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.