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Finding the Fourth Proportional to 2,407.83, 3,612.46 and 719.28

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Solution

The fourth proportional to 2,407.83, 3,612.46 and 719.28 is: 1,079.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,407.83 : 3,612.46 = 719.28 : x
  2. Step 2: Convert to fraction form
    2,407.83/3,612.46 = 719.28/x
  3. Step 3: Cross multiply
    2,407.83x = 3,612.46 × 719.28
  4. Step 4: Simplify right side
    2,407.83x = 2,598,370.23
  5. Step 5: Solve for x
    x = 2,598,370.23/2,407.83
  6. Step 6: Final answer
    x = 1,079.13

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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.