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Finding the Fourth Proportional to 34,172.76, 47,149.52 and 20,018.01

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Solution

The fourth proportional to 34,172.76, 47,149.52 and 20,018.01 is: 27,619.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,172.76 : 47,149.52 = 20,018.01 : x
  2. Step 2: Convert to fraction form
    34,172.76/47,149.52 = 20,018.01/x
  3. Step 3: Cross multiply
    34,172.76x = 47,149.52 × 20,018.01
  4. Step 4: Simplify right side
    34,172.76x = 943,839,462.77
  5. Step 5: Solve for x
    x = 943,839,462.77/34,172.76
  6. Step 6: Final answer
    x = 27,619.64

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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.