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Finding the Fourth Proportional to 170,675.51, 255,990.78 and 50,729.90

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Solution

The fourth proportional to 170,675.51, 255,990.78 and 50,729.90 is: 76,088.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,675.51 : 255,990.78 = 50,729.90 : x
  2. Step 2: Convert to fraction form
    170,675.51/255,990.78 = 50,729.90/x
  3. Step 3: Cross multiply
    170,675.51x = 255,990.78 × 50,729.90
  4. Step 4: Simplify right side
    170,675.51x = 12,986,385,136.72
  5. Step 5: Solve for x
    x = 12,986,385,136.72/170,675.51
  6. Step 6: Final answer
    x = 76,088.16

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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.