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Finding the Fourth Proportional to 107,286.07, 148,020.52 and 61,958.07

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Solution

The fourth proportional to 107,286.07, 148,020.52 and 61,958.07 is: 85,482.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,286.07 : 148,020.52 = 61,958.07 : x
  2. Step 2: Convert to fraction form
    107,286.07/148,020.52 = 61,958.07/x
  3. Step 3: Cross multiply
    107,286.07x = 148,020.52 × 61,958.07
  4. Step 4: Simplify right side
    107,286.07x = 9,171,065,739.60
  5. Step 5: Solve for x
    x = 9,171,065,739.60/107,286.07
  6. Step 6: Final answer
    x = 85,482.35

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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.