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Finding the Fourth Proportional to 315,881.15, 473,648.20 and 155,604.42

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Solution

The fourth proportional to 315,881.15, 473,648.20 and 155,604.42 is: 233,321.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,881.15 : 473,648.20 = 155,604.42 : x
  2. Step 2: Convert to fraction form
    315,881.15/473,648.20 = 155,604.42/x
  3. Step 3: Cross multiply
    315,881.15x = 473,648.20 × 155,604.42
  4. Step 4: Simplify right side
    315,881.15x = 73,701,753,056.03
  5. Step 5: Solve for x
    x = 73,701,753,056.03/315,881.15
  6. Step 6: Final answer
    x = 233,321.15

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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.