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Finding the Fourth Proportional to 356,146.39, 534,319.71 and 143,063.92

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Solution

The fourth proportional to 356,146.39, 534,319.71 and 143,063.92 is: 214,636.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,146.39 : 534,319.71 = 143,063.92 : x
  2. Step 2: Convert to fraction form
    356,146.39/534,319.71 = 143,063.92/x
  3. Step 3: Cross multiply
    356,146.39x = 534,319.71 × 143,063.92
  4. Step 4: Simplify right side
    356,146.39x = 76,441,872,245.86
  5. Step 5: Solve for x
    x = 76,441,872,245.86/356,146.39
  6. Step 6: Final answer
    x = 214,636.10

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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.