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Finding the Fourth Proportional to 373,653.57, 515,639.21 and 212,508.44

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Solution

The fourth proportional to 373,653.57, 515,639.21 and 212,508.44 is: 293,260.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,653.57 : 515,639.21 = 212,508.44 : x
  2. Step 2: Convert to fraction form
    373,653.57/515,639.21 = 212,508.44/x
  3. Step 3: Cross multiply
    373,653.57x = 515,639.21 × 212,508.44
  4. Step 4: Simplify right side
    373,653.57x = 109,577,684,119.93
  5. Step 5: Solve for x
    x = 109,577,684,119.93/373,653.57
  6. Step 6: Final answer
    x = 293,260.10

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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.