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Finding the Fourth Proportional to 28,074.77, 38,697.02 and 19,901.11

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Solution

The fourth proportional to 28,074.77, 38,697.02 and 19,901.11 is: 27,430.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.77 : 38,697.02 = 19,901.11 : x
  2. Step 2: Convert to fraction form
    28,074.77/38,697.02 = 19,901.11/x
  3. Step 3: Cross multiply
    28,074.77x = 38,697.02 × 19,901.11
  4. Step 4: Simplify right side
    28,074.77x = 770,113,651.69
  5. Step 5: Solve for x
    x = 770,113,651.69/28,074.77
  6. Step 6: Final answer
    x = 27,430.81

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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.