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Finding the Fourth Proportional to 128,714.95, 193,051.77 and 35,198.83

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Solution

The fourth proportional to 128,714.95, 193,051.77 and 35,198.83 is: 52,792.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,714.95 : 193,051.77 = 35,198.83 : x
  2. Step 2: Convert to fraction form
    128,714.95/193,051.77 = 35,198.83/x
  3. Step 3: Cross multiply
    128,714.95x = 193,051.77 × 35,198.83
  4. Step 4: Simplify right side
    128,714.95x = 6,795,196,433.43
  5. Step 5: Solve for x
    x = 6,795,196,433.43/128,714.95
  6. Step 6: Final answer
    x = 52,792.60

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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.