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Finding the Fourth Proportional to 12,157.75, 16,775.85 and 6,852.48

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Solution

The fourth proportional to 12,157.75, 16,775.85 and 6,852.48 is: 9,455.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.75 : 16,775.85 = 6,852.48 : x
  2. Step 2: Convert to fraction form
    12,157.75/16,775.85 = 6,852.48/x
  3. Step 3: Cross multiply
    12,157.75x = 16,775.85 × 6,852.48
  4. Step 4: Simplify right side
    12,157.75x = 114,956,176.61
  5. Step 5: Solve for x
    x = 114,956,176.61/12,157.75
  6. Step 6: Final answer
    x = 9,455.38

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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.