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Finding the Fourth Proportional to 419,853.68, 579,409.81 and 256,536.72

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Solution

The fourth proportional to 419,853.68, 579,409.81 and 256,536.72 is: 354,027.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,853.68 : 579,409.81 = 256,536.72 : x
  2. Step 2: Convert to fraction form
    419,853.68/579,409.81 = 256,536.72/x
  3. Step 3: Cross multiply
    419,853.68x = 579,409.81 × 256,536.72
  4. Step 4: Simplify right side
    419,853.68x = 148,639,891,551.88
  5. Step 5: Solve for x
    x = 148,639,891,551.88/419,853.68
  6. Step 6: Final answer
    x = 354,027.84

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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.