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Finding the Fourth Proportional to 10,700.70, 16,051.05 and 2,803.20

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Solution

The fourth proportional to 10,700.70, 16,051.05 and 2,803.20 is: 4,204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,700.70 : 16,051.05 = 2,803.20 : x
  2. Step 2: Convert to fraction form
    10,700.70/16,051.05 = 2,803.20/x
  3. Step 3: Cross multiply
    10,700.70x = 16,051.05 × 2,803.20
  4. Step 4: Simplify right side
    10,700.70x = 44,994,303.36
  5. Step 5: Solve for x
    x = 44,994,303.36/10,700.70
  6. Step 6: Final answer
    x = 4,204.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.