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Finding the Fourth Proportional to 623,520.32, 860,255.04 and 381,550.40

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Solution

The fourth proportional to 623,520.32, 860,255.04 and 381,550.40 is: 526,415.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,520.32 : 860,255.04 = 381,550.40 : x
  2. Step 2: Convert to fraction form
    623,520.32/860,255.04 = 381,550.40/x
  3. Step 3: Cross multiply
    623,520.32x = 860,255.04 × 381,550.40
  4. Step 4: Simplify right side
    623,520.32x = 328,230,654,614.02
  5. Step 5: Solve for x
    x = 328,230,654,614.02/623,520.32
  6. Step 6: Final answer
    x = 526,415.33

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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.