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Finding the Fourth Proportional to 136,714.80, 205,072.20 and 62,986.80

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Solution

The fourth proportional to 136,714.80, 205,072.20 and 62,986.80 is: 94,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,714.80 : 205,072.20 = 62,986.80 : x
  2. Step 2: Convert to fraction form
    136,714.80/205,072.20 = 62,986.80/x
  3. Step 3: Cross multiply
    136,714.80x = 205,072.20 × 62,986.80
  4. Step 4: Simplify right side
    136,714.80x = 12,916,841,646.96
  5. Step 5: Solve for x
    x = 12,916,841,646.96/136,714.80
  6. Step 6: Final answer
    x = 94,480.20

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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.