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Finding the Fourth Proportional to 9,365.70, 12,923.73 and 5,173.68

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Solution

The fourth proportional to 9,365.70, 12,923.73 and 5,173.68 is: 7,139.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,365.70 : 12,923.73 = 5,173.68 : x
  2. Step 2: Convert to fraction form
    9,365.70/12,923.73 = 5,173.68/x
  3. Step 3: Cross multiply
    9,365.70x = 12,923.73 × 5,173.68
  4. Step 4: Simplify right side
    9,365.70x = 66,863,243.43
  5. Step 5: Solve for x
    x = 66,863,243.43/9,365.70
  6. Step 6: Final answer
    x = 7,139.16

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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.