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Finding the Fourth Proportional to 28,807.58, 39,750.90 and 16,057.64

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Solution

The fourth proportional to 28,807.58, 39,750.90 and 16,057.64 is: 22,157.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,807.58 : 39,750.90 = 16,057.64 : x
  2. Step 2: Convert to fraction form
    28,807.58/39,750.90 = 16,057.64/x
  3. Step 3: Cross multiply
    28,807.58x = 39,750.90 × 16,057.64
  4. Step 4: Simplify right side
    28,807.58x = 638,305,641.88
  5. Step 5: Solve for x
    x = 638,305,641.88/28,807.58
  6. Step 6: Final answer
    x = 22,157.56

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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.