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Finding the Fourth Proportional to 170,891.51, 256,343.40 and 64,265.69

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Solution

The fourth proportional to 170,891.51, 256,343.40 and 64,265.69 is: 96,400.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,891.51 : 256,343.40 = 64,265.69 : x
  2. Step 2: Convert to fraction form
    170,891.51/256,343.40 = 64,265.69/x
  3. Step 3: Cross multiply
    170,891.51x = 256,343.40 × 64,265.69
  4. Step 4: Simplify right side
    170,891.51x = 16,474,084,196.23
  5. Step 5: Solve for x
    x = 16,474,084,196.23/170,891.51
  6. Step 6: Final answer
    x = 96,400.84

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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.