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Finding the Fourth Proportional to 418,260.81, 577,198.83 and 227,274.23

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Solution

The fourth proportional to 418,260.81, 577,198.83 and 227,274.23 is: 313,637.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,260.81 : 577,198.83 = 227,274.23 : x
  2. Step 2: Convert to fraction form
    418,260.81/577,198.83 = 227,274.23/x
  3. Step 3: Cross multiply
    418,260.81x = 577,198.83 × 227,274.23
  4. Step 4: Simplify right side
    418,260.81x = 131,182,416,759.16
  5. Step 5: Solve for x
    x = 131,182,416,759.16/418,260.81
  6. Step 6: Final answer
    x = 313,637.84

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Half scale
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Double scale
Find fourth proportional to 418,261.81, 577,200.21 and 227,275.23
Similar ratio
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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.