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Finding the Fourth Proportional to 541,128.60, 811,808.10 and 167,189.40

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Solution

The fourth proportional to 541,128.60, 811,808.10 and 167,189.40 is: 250,819.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,128.60 : 811,808.10 = 167,189.40 : x
  2. Step 2: Convert to fraction form
    541,128.60/811,808.10 = 167,189.40/x
  3. Step 3: Cross multiply
    541,128.60x = 811,808.10 × 167,189.40
  4. Step 4: Simplify right side
    541,128.60x = 135,725,709,154.14
  5. Step 5: Solve for x
    x = 135,725,709,154.14/541,128.60
  6. Step 6: Final answer
    x = 250,819.69

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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.