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Finding the Fourth Proportional to 2,031.54, 3,047.93 and 860.93

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Solution

The fourth proportional to 2,031.54, 3,047.93 and 860.93 is: 1,291.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.54 : 3,047.93 = 860.93 : x
  2. Step 2: Convert to fraction form
    2,031.54/3,047.93 = 860.93/x
  3. Step 3: Cross multiply
    2,031.54x = 3,047.93 × 860.93
  4. Step 4: Simplify right side
    2,031.54x = 2,624,054.37
  5. Step 5: Solve for x
    x = 2,624,054.37/2,031.54
  6. Step 6: Final answer
    x = 1,291.66

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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.