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Finding the Fourth Proportional to 543,009.40, 814,514.10 and 344,211.10

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Solution

The fourth proportional to 543,009.40, 814,514.10 and 344,211.10 is: 516,316.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,009.40 : 814,514.10 = 344,211.10 : x
  2. Step 2: Convert to fraction form
    543,009.40/814,514.10 = 344,211.10/x
  3. Step 3: Cross multiply
    543,009.40x = 814,514.10 × 344,211.10
  4. Step 4: Simplify right side
    543,009.40x = 280,364,794,326.51
  5. Step 5: Solve for x
    x = 280,364,794,326.51/543,009.40
  6. Step 6: Final answer
    x = 516,316.65

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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.