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Finding the Fourth Proportional to 99,739.68, 137,690.64 and 62,026.08

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Solution

The fourth proportional to 99,739.68, 137,690.64 and 62,026.08 is: 85,627.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,739.68 : 137,690.64 = 62,026.08 : x
  2. Step 2: Convert to fraction form
    99,739.68/137,690.64 = 62,026.08/x
  3. Step 3: Cross multiply
    99,739.68x = 137,690.64 × 62,026.08
  4. Step 4: Simplify right side
    99,739.68x = 8,540,410,651.89
  5. Step 5: Solve for x
    x = 8,540,410,651.89/99,739.68
  6. Step 6: Final answer
    x = 85,627.01

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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.