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Finding the Fourth Proportional to 321,735, 443,994.66 and 187,624.92

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Solution

The fourth proportional to 321,735, 443,994.66 and 187,624.92 is: 258,922.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,735 : 443,994.66 = 187,624.92 : x
  2. Step 2: Convert to fraction form
    321,735/443,994.66 = 187,624.92/x
  3. Step 3: Cross multiply
    321,735x = 443,994.66 × 187,624.92
  4. Step 4: Simplify right side
    321,735x = 83,304,462,562.93
  5. Step 5: Solve for x
    x = 83,304,462,562.93/321,735
  6. Step 6: Final answer
    x = 258,922.60

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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.