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Finding the Fourth Proportional to 2,697.70, 4,045.76 and 1,053.86

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Solution

The fourth proportional to 2,697.70, 4,045.76 and 1,053.86 is: 1,580.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,697.70 : 4,045.76 = 1,053.86 : x
  2. Step 2: Convert to fraction form
    2,697.70/4,045.76 = 1,053.86/x
  3. Step 3: Cross multiply
    2,697.70x = 4,045.76 × 1,053.86
  4. Step 4: Simplify right side
    2,697.70x = 4,263,664.63
  5. Step 5: Solve for x
    x = 4,263,664.63/2,697.70
  6. Step 6: Final answer
    x = 1,580.48

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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.