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Finding the Fourth Proportional to 621,636.08, 857,856.52 and 349,704.16

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Solution

The fourth proportional to 621,636.08, 857,856.52 and 349,704.16 is: 482,591.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,636.08 : 857,856.52 = 349,704.16 : x
  2. Step 2: Convert to fraction form
    621,636.08/857,856.52 = 349,704.16/x
  3. Step 3: Cross multiply
    621,636.08x = 857,856.52 × 349,704.16
  4. Step 4: Simplify right side
    621,636.08x = 299,995,993,727.12
  5. Step 5: Solve for x
    x = 299,995,993,727.12/621,636.08
  6. Step 6: Final answer
    x = 482,591.03

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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.