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Finding the Fourth Proportional to 86,174.84, 129,261.29 and 33,621.23

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Solution

The fourth proportional to 86,174.84, 129,261.29 and 33,621.23 is: 50,431.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,174.84 : 129,261.29 = 33,621.23 : x
  2. Step 2: Convert to fraction form
    86,174.84/129,261.29 = 33,621.23/x
  3. Step 3: Cross multiply
    86,174.84x = 129,261.29 × 33,621.23
  4. Step 4: Simplify right side
    86,174.84x = 4,345,922,746.77
  5. Step 5: Solve for x
    x = 4,345,922,746.77/86,174.84
  6. Step 6: Final answer
    x = 50,431.46

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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.