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Finding the Fourth Proportional to 170,803.08, 235,690.36 and 99,169.11

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Solution

The fourth proportional to 170,803.08, 235,690.36 and 99,169.11 is: 136,842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,803.08 : 235,690.36 = 99,169.11 : x
  2. Step 2: Convert to fraction form
    170,803.08/235,690.36 = 99,169.11/x
  3. Step 3: Cross multiply
    170,803.08x = 235,690.36 × 99,169.11
  4. Step 4: Simplify right side
    170,803.08x = 23,373,202,988.86
  5. Step 5: Solve for x
    x = 23,373,202,988.86/170,803.08
  6. Step 6: Final answer
    x = 136,842.98

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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.