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Finding the Fourth Proportional to 7,065.74, 9,750.98 and 3,922.53

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Solution

The fourth proportional to 7,065.74, 9,750.98 and 3,922.53 is: 5,413.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.74 : 9,750.98 = 3,922.53 : x
  2. Step 2: Convert to fraction form
    7,065.74/9,750.98 = 3,922.53/x
  3. Step 3: Cross multiply
    7,065.74x = 9,750.98 × 3,922.53
  4. Step 4: Simplify right side
    7,065.74x = 38,248,491.97
  5. Step 5: Solve for x
    x = 38,248,491.97/7,065.74
  6. Step 6: Final answer
    x = 5,413.24

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1.5x scale

Why These Related Problems?

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