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Finding the Fourth Proportional to 393,446.19, 543,001.82 and 223,705.83

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Solution

The fourth proportional to 393,446.19, 543,001.82 and 223,705.83 is: 308,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,446.19 : 543,001.82 = 223,705.83 : x
  2. Step 2: Convert to fraction form
    393,446.19/543,001.82 = 223,705.83/x
  3. Step 3: Cross multiply
    393,446.19x = 543,001.82 × 223,705.83
  4. Step 4: Simplify right side
    393,446.19x = 121,472,671,716.08
  5. Step 5: Solve for x
    x = 121,472,671,716.08/393,446.19
  6. Step 6: Final answer
    x = 308,740.24

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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.