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Finding the Fourth Proportional to 661,604.20, 992,406.30 and 346,157.80

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Solution

The fourth proportional to 661,604.20, 992,406.30 and 346,157.80 is: 519,236.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,604.20 : 992,406.30 = 346,157.80 : x
  2. Step 2: Convert to fraction form
    661,604.20/992,406.30 = 346,157.80/x
  3. Step 3: Cross multiply
    661,604.20x = 992,406.30 × 346,157.80
  4. Step 4: Simplify right side
    661,604.20x = 343,529,181,514.14
  5. Step 5: Solve for x
    x = 343,529,181,514.14/661,604.20
  6. Step 6: Final answer
    x = 519,236.70

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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.