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Finding the Fourth Proportional to 618,999.91, 928,478 and 169,713.57

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Solution

The fourth proportional to 618,999.91, 928,478 and 169,713.57 is: 254,564.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,999.91 : 928,478 = 169,713.57 : x
  2. Step 2: Convert to fraction form
    618,999.91/928,478 = 169,713.57/x
  3. Step 3: Cross multiply
    618,999.91x = 928,478 × 169,713.57
  4. Step 4: Simplify right side
    618,999.91x = 157,575,316,046.46
  5. Step 5: Solve for x
    x = 157,575,316,046.46/618,999.91
  6. Step 6: Final answer
    x = 254,564.36

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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.