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Finding the Fourth Proportional to 2,698.52, 4,047.79 and 750.72

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Solution

The fourth proportional to 2,698.52, 4,047.79 and 750.72 is: 1,126.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,698.52 : 4,047.79 = 750.72 : x
  2. Step 2: Convert to fraction form
    2,698.52/4,047.79 = 750.72/x
  3. Step 3: Cross multiply
    2,698.52x = 4,047.79 × 750.72
  4. Step 4: Simplify right side
    2,698.52x = 3,038,755.03
  5. Step 5: Solve for x
    x = 3,038,755.03/2,698.52
  6. Step 6: Final answer
    x = 1,126.08

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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.