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Finding the Fourth Proportional to 614,518.88, 847,555.32 and 399,727.56

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Solution

The fourth proportional to 614,518.88, 847,555.32 and 399,727.56 is: 551,311.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,518.88 : 847,555.32 = 399,727.56 : x
  2. Step 2: Convert to fraction form
    614,518.88/847,555.32 = 399,727.56/x
  3. Step 3: Cross multiply
    614,518.88x = 847,555.32 × 399,727.56
  4. Step 4: Simplify right side
    614,518.88x = 338,791,220,028.62
  5. Step 5: Solve for x
    x = 338,791,220,028.62/614,518.88
  6. Step 6: Final answer
    x = 551,311.33

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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.