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Finding the Fourth Proportional to 541,328.40, 811,992.60 and 167,389.20

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Solution

The fourth proportional to 541,328.40, 811,992.60 and 167,389.20 is: 251,083.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,328.40 : 811,992.60 = 167,389.20 : x
  2. Step 2: Convert to fraction form
    541,328.40/811,992.60 = 167,389.20/x
  3. Step 3: Cross multiply
    541,328.40x = 811,992.60 × 167,389.20
  4. Step 4: Simplify right side
    541,328.40x = 135,918,791,719.92
  5. Step 5: Solve for x
    x = 135,918,791,719.92/541,328.40
  6. Step 6: Final answer
    x = 251,083.80

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Double scale
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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.