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Finding the Fourth Proportional to 236,145.66, 354,271.11 and 86,382.63

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Solution

The fourth proportional to 236,145.66, 354,271.11 and 86,382.63 is: 129,593.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,145.66 : 354,271.11 = 86,382.63 : x
  2. Step 2: Convert to fraction form
    236,145.66/354,271.11 = 86,382.63/x
  3. Step 3: Cross multiply
    236,145.66x = 354,271.11 × 86,382.63
  4. Step 4: Simplify right side
    236,145.66x = 30,602,869,890.88
  5. Step 5: Solve for x
    x = 30,602,869,890.88/236,145.66
  6. Step 6: Final answer
    x = 129,593.19

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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.