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Finding the Fourth Proportional to 51,310.60, 70,807.96 and 28,649.98

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Solution

The fourth proportional to 51,310.60, 70,807.96 and 28,649.98 is: 39,536.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,310.60 : 70,807.96 = 28,649.98 : x
  2. Step 2: Convert to fraction form
    51,310.60/70,807.96 = 28,649.98/x
  3. Step 3: Cross multiply
    51,310.60x = 70,807.96 × 28,649.98
  4. Step 4: Simplify right side
    51,310.60x = 2,028,646,522.73
  5. Step 5: Solve for x
    x = 2,028,646,522.73/51,310.60
  6. Step 6: Final answer
    x = 39,536.60

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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.