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Finding the Fourth Proportional to 7,045.75, 9,720.78 and 4,061.53

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Solution

The fourth proportional to 7,045.75, 9,720.78 and 4,061.53 is: 5,603.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,045.75 : 9,720.78 = 4,061.53 : x
  2. Step 2: Convert to fraction form
    7,045.75/9,720.78 = 4,061.53/x
  3. Step 3: Cross multiply
    7,045.75x = 9,720.78 × 4,061.53
  4. Step 4: Simplify right side
    7,045.75x = 39,481,239.59
  5. Step 5: Solve for x
    x = 39,481,239.59/7,045.75
  6. Step 6: Final answer
    x = 5,603.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.