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Finding the Fourth Proportional to 171,105.72, 236,121.80 and 99,510.63

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Solution

The fourth proportional to 171,105.72, 236,121.80 and 99,510.63 is: 137,322.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,105.72 : 236,121.80 = 99,510.63 : x
  2. Step 2: Convert to fraction form
    171,105.72/236,121.80 = 99,510.63/x
  3. Step 3: Cross multiply
    171,105.72x = 236,121.80 × 99,510.63
  4. Step 4: Simplify right side
    171,105.72x = 23,496,628,577.18
  5. Step 5: Solve for x
    x = 23,496,628,577.18/171,105.72
  6. Step 6: Final answer
    x = 137,322.29

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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.