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Finding the Fourth Proportional to 2,005.48, 3,009.58 and 706.95

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Solution

The fourth proportional to 2,005.48, 3,009.58 and 706.95 is: 1,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.48 : 3,009.58 = 706.95 : x
  2. Step 2: Convert to fraction form
    2,005.48/3,009.58 = 706.95/x
  3. Step 3: Cross multiply
    2,005.48x = 3,009.58 × 706.95
  4. Step 4: Simplify right side
    2,005.48x = 2,127,622.58
  5. Step 5: Solve for x
    x = 2,127,622.58/2,005.48
  6. Step 6: Final answer
    x = 1,060.90

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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.