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Finding the Fourth Proportional to 367,587.40, 551,381.10 and 130,937.80

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Solution

The fourth proportional to 367,587.40, 551,381.10 and 130,937.80 is: 196,406.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,587.40 : 551,381.10 = 130,937.80 : x
  2. Step 2: Convert to fraction form
    367,587.40/551,381.10 = 130,937.80/x
  3. Step 3: Cross multiply
    367,587.40x = 551,381.10 × 130,937.80
  4. Step 4: Simplify right side
    367,587.40x = 72,196,628,195.58
  5. Step 5: Solve for x
    x = 72,196,628,195.58/367,587.40
  6. Step 6: Final answer
    x = 196,406.70

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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.