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Finding the Fourth Proportional to 618,781.48, 928,172.92 and 169,506.20

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Solution

The fourth proportional to 618,781.48, 928,172.92 and 169,506.20 is: 254,259.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,781.48 : 928,172.92 = 169,506.20 : x
  2. Step 2: Convert to fraction form
    618,781.48/928,172.92 = 169,506.20/x
  3. Step 3: Cross multiply
    618,781.48x = 928,172.92 × 169,506.20
  4. Step 4: Simplify right side
    618,781.48x = 157,331,064,612.10
  5. Step 5: Solve for x
    x = 157,331,064,612.10/618,781.48
  6. Step 6: Final answer
    x = 254,259.49

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Similar ratio
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1.5x scale

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.