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Finding the Fourth Proportional to 543,677.40, 815,516.10 and 344,879.10

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Solution

The fourth proportional to 543,677.40, 815,516.10 and 344,879.10 is: 517,318.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,677.40 : 815,516.10 = 344,879.10 : x
  2. Step 2: Convert to fraction form
    543,677.40/815,516.10 = 344,879.10/x
  3. Step 3: Cross multiply
    543,677.40x = 815,516.10 × 344,879.10
  4. Step 4: Simplify right side
    543,677.40x = 281,254,458,603.51
  5. Step 5: Solve for x
    x = 281,254,458,603.51/543,677.40
  6. Step 6: Final answer
    x = 517,318.65

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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.