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Finding the Fourth Proportional to 8,762.87, 12,092.70 and 4,783.98

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Solution

The fourth proportional to 8,762.87, 12,092.70 and 4,783.98 is: 6,601.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.87 : 12,092.70 = 4,783.98 : x
  2. Step 2: Convert to fraction form
    8,762.87/12,092.70 = 4,783.98/x
  3. Step 3: Cross multiply
    8,762.87x = 12,092.70 × 4,783.98
  4. Step 4: Simplify right side
    8,762.87x = 57,851,234.95
  5. Step 5: Solve for x
    x = 57,851,234.95/8,762.87
  6. Step 6: Final answer
    x = 6,601.86

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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.