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Finding the Fourth Proportional to 316,638.60, 473,921.10 and 246,136.20

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Solution

The fourth proportional to 316,638.60, 473,921.10 and 246,136.20 is: 368,398.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,638.60 : 473,921.10 = 246,136.20 : x
  2. Step 2: Convert to fraction form
    316,638.60/473,921.10 = 246,136.20/x
  3. Step 3: Cross multiply
    316,638.60x = 473,921.10 × 246,136.20
  4. Step 4: Simplify right side
    316,638.60x = 116,649,138,653.82
  5. Step 5: Solve for x
    x = 116,649,138,653.82/316,638.60
  6. Step 6: Final answer
    x = 368,398.35

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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.