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Finding the Fourth Proportional to 623,698.92, 860,704.34 and 351,766.26

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Solution

The fourth proportional to 623,698.92, 860,704.34 and 351,766.26 is: 485,437.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,698.92 : 860,704.34 = 351,766.26 : x
  2. Step 2: Convert to fraction form
    623,698.92/860,704.34 = 351,766.26/x
  3. Step 3: Cross multiply
    623,698.92x = 860,704.34 × 351,766.26
  4. Step 4: Simplify right side
    623,698.92x = 302,766,747,526.98
  5. Step 5: Solve for x
    x = 302,766,747,526.98/623,698.92
  6. Step 6: Final answer
    x = 485,437.34

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Double scale
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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.