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Finding the Fourth Proportional to 623,791.12, 860,830.71 and 351,858.16

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Solution

The fourth proportional to 623,791.12, 860,830.71 and 351,858.16 is: 485,563.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,791.12 : 860,830.71 = 351,858.16 : x
  2. Step 2: Convert to fraction form
    623,791.12/860,830.71 = 351,858.16/x
  3. Step 3: Cross multiply
    623,791.12x = 860,830.71 × 351,858.16
  4. Step 4: Simplify right side
    623,791.12x = 302,890,309,692.09
  5. Step 5: Solve for x
    x = 302,890,309,692.09/623,791.12
  6. Step 6: Final answer
    x = 485,563.68

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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.