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Finding the Fourth Proportional to 1,134.70, 1,700.43 and 845.98

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Solution

The fourth proportional to 1,134.70, 1,700.43 and 845.98 is: 1,267.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.70 : 1,700.43 = 845.98 : x
  2. Step 2: Convert to fraction form
    1,134.70/1,700.43 = 845.98/x
  3. Step 3: Cross multiply
    1,134.70x = 1,700.43 × 845.98
  4. Step 4: Simplify right side
    1,134.70x = 1,438,529.77
  5. Step 5: Solve for x
    x = 1,438,529.77/1,134.70
  6. Step 6: Final answer
    x = 1,267.76

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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.