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Finding the Fourth Proportional to 99,198.81, 136,895.34 and 53,877.68

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Solution

The fourth proportional to 99,198.81, 136,895.34 and 53,877.68 is: 74,351.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,198.81 : 136,895.34 = 53,877.68 : x
  2. Step 2: Convert to fraction form
    99,198.81/136,895.34 = 53,877.68/x
  3. Step 3: Cross multiply
    99,198.81x = 136,895.34 × 53,877.68
  4. Step 4: Simplify right side
    99,198.81x = 7,375,602,637.53
  5. Step 5: Solve for x
    x = 7,375,602,637.53/99,198.81
  6. Step 6: Final answer
    x = 74,351.73

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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.