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Finding the Fourth Proportional to 409,890.80, 614,447.40 and 367,900.40

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Solution

The fourth proportional to 409,890.80, 614,447.40 and 367,900.40 is: 551,501.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,890.80 : 614,447.40 = 367,900.40 : x
  2. Step 2: Convert to fraction form
    409,890.80/614,447.40 = 367,900.40/x
  3. Step 3: Cross multiply
    409,890.80x = 614,447.40 × 367,900.40
  4. Step 4: Simplify right side
    409,890.80x = 226,055,444,238.96
  5. Step 5: Solve for x
    x = 226,055,444,238.96/409,890.80
  6. Step 6: Final answer
    x = 551,501.63

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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.