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Finding the Fourth Proportional to 1,059.75, 1,586.93 and 1,031.67

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Solution

The fourth proportional to 1,059.75, 1,586.93 and 1,031.67 is: 1,544.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.75 : 1,586.93 = 1,031.67 : x
  2. Step 2: Convert to fraction form
    1,059.75/1,586.93 = 1,031.67/x
  3. Step 3: Cross multiply
    1,059.75x = 1,586.93 × 1,031.67
  4. Step 4: Simplify right side
    1,059.75x = 1,637,182.91
  5. Step 5: Solve for x
    x = 1,637,182.91/1,059.75
  6. Step 6: Final answer
    x = 1,544.88

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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.