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Finding the Fourth Proportional to 144,170.21, 216,238.91 and 38,980.98

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Solution

The fourth proportional to 144,170.21, 216,238.91 and 38,980.98 is: 58,467.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,170.21 : 216,238.91 = 38,980.98 : x
  2. Step 2: Convert to fraction form
    144,170.21/216,238.91 = 38,980.98/x
  3. Step 3: Cross multiply
    144,170.21x = 216,238.91 × 38,980.98
  4. Step 4: Simplify right side
    144,170.21x = 8,429,204,431.03
  5. Step 5: Solve for x
    x = 8,429,204,431.03/144,170.21
  6. Step 6: Final answer
    x = 58,467.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.