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Finding the Fourth Proportional to 170,820.90, 235,714.92 and 99,186.90

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Solution

The fourth proportional to 170,820.90, 235,714.92 and 99,186.90 is: 136,867.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,820.90 : 235,714.92 = 99,186.90 : x
  2. Step 2: Convert to fraction form
    170,820.90/235,714.92 = 99,186.90/x
  3. Step 3: Cross multiply
    170,820.90x = 235,714.92 × 99,186.90
  4. Step 4: Simplify right side
    170,820.90x = 23,379,832,198.55
  5. Step 5: Solve for x
    x = 23,379,832,198.55/170,820.90
  6. Step 6: Final answer
    x = 136,867.52

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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.