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Finding the Fourth Proportional to 9,860.74, 13,608.03 and 5,384.68

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Solution

The fourth proportional to 9,860.74, 13,608.03 and 5,384.68 is: 7,430.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,860.74 : 13,608.03 = 5,384.68 : x
  2. Step 2: Convert to fraction form
    9,860.74/13,608.03 = 5,384.68/x
  3. Step 3: Cross multiply
    9,860.74x = 13,608.03 × 5,384.68
  4. Step 4: Simplify right side
    9,860.74x = 73,274,873.15
  5. Step 5: Solve for x
    x = 73,274,873.15/9,860.74
  6. Step 6: Final answer
    x = 7,430.97

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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.