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Finding the Fourth Proportional to 393,732.96, 543,346.75 and 223,966.68

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Solution

The fourth proportional to 393,732.96, 543,346.75 and 223,966.68 is: 309,071.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,732.96 : 543,346.75 = 223,966.68 : x
  2. Step 2: Convert to fraction form
    393,732.96/543,346.75 = 223,966.68/x
  3. Step 3: Cross multiply
    393,732.96x = 543,346.75 × 223,966.68
  4. Step 4: Simplify right side
    393,732.96x = 121,691,567,686.29
  5. Step 5: Solve for x
    x = 121,691,567,686.29/393,732.96
  6. Step 6: Final answer
    x = 309,071.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.