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Finding the Fourth Proportional to 418,523.99, 577,841.24 and 321,555.11

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Solution

The fourth proportional to 418,523.99, 577,841.24 and 321,555.11 is: 443,959.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,523.99 : 577,841.24 = 321,555.11 : x
  2. Step 2: Convert to fraction form
    418,523.99/577,841.24 = 321,555.11/x
  3. Step 3: Cross multiply
    418,523.99x = 577,841.24 × 321,555.11
  4. Step 4: Simplify right side
    418,523.99x = 185,807,801,405.42
  5. Step 5: Solve for x
    x = 185,807,801,405.42/418,523.99
  6. Step 6: Final answer
    x = 443,959.74

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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.