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Finding the Fourth Proportional to 620,895.39, 856,843.35 and 375,876.88

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Solution

The fourth proportional to 620,895.39, 856,843.35 and 375,876.88 is: 518,714.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,895.39 : 856,843.35 = 375,876.88 : x
  2. Step 2: Convert to fraction form
    620,895.39/856,843.35 = 375,876.88/x
  3. Step 3: Cross multiply
    620,895.39x = 856,843.35 × 375,876.88
  4. Step 4: Simplify right side
    620,895.39x = 322,067,605,046.75
  5. Step 5: Solve for x
    x = 322,067,605,046.75/620,895.39
  6. Step 6: Final answer
    x = 518,714.76

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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.