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Finding the Fourth Proportional to 612,832.32, 845,293.20 and 397,587.84

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Solution

The fourth proportional to 612,832.32, 845,293.20 and 397,587.84 is: 548,401.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,832.32 : 845,293.20 = 397,587.84 : x
  2. Step 2: Convert to fraction form
    612,832.32/845,293.20 = 397,587.84/x
  3. Step 3: Cross multiply
    612,832.32x = 845,293.20 × 397,587.84
  4. Step 4: Simplify right side
    612,832.32x = 336,078,297,554.69
  5. Step 5: Solve for x
    x = 336,078,297,554.69/612,832.32
  6. Step 6: Final answer
    x = 548,401.72

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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.