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Finding the Fourth Proportional to 410,318.40, 614,863.20 and 347,649.60

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Solution

The fourth proportional to 410,318.40, 614,863.20 and 347,649.60 is: 520,953.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,318.40 : 614,863.20 = 347,649.60 : x
  2. Step 2: Convert to fraction form
    410,318.40/614,863.20 = 347,649.60/x
  3. Step 3: Cross multiply
    410,318.40x = 614,863.20 × 347,649.60
  4. Step 4: Simplify right side
    410,318.40x = 213,756,945,534.72
  5. Step 5: Solve for x
    x = 213,756,945,534.72/410,318.40
  6. Step 6: Final answer
    x = 520,953.84

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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.