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Finding the Fourth Proportional to 98,714.97, 136,226.69 and 55,703.58

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Solution

The fourth proportional to 98,714.97, 136,226.69 and 55,703.58 is: 76,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,714.97 : 136,226.69 = 55,703.58 : x
  2. Step 2: Convert to fraction form
    98,714.97/136,226.69 = 55,703.58/x
  3. Step 3: Cross multiply
    98,714.97x = 136,226.69 × 55,703.58
  4. Step 4: Simplify right side
    98,714.97x = 7,588,314,046.03
  5. Step 5: Solve for x
    x = 7,588,314,046.03/98,714.97
  6. Step 6: Final answer
    x = 76,870.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.