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Finding the Fourth Proportional to 623,375.22, 860,400.90 and 381,790.92

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Solution

The fourth proportional to 623,375.22, 860,400.90 and 381,790.92 is: 526,959.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,375.22 : 860,400.90 = 381,790.92 : x
  2. Step 2: Convert to fraction form
    623,375.22/860,400.90 = 381,790.92/x
  3. Step 3: Cross multiply
    623,375.22x = 860,400.90 × 381,790.92
  4. Step 4: Simplify right side
    623,375.22x = 328,493,251,179.83
  5. Step 5: Solve for x
    x = 328,493,251,179.83/623,375.22
  6. Step 6: Final answer
    x = 526,959.11

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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.