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Finding the Fourth Proportional to 74,580.68, 111,871.02 and 61,405.37

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Solution

The fourth proportional to 74,580.68, 111,871.02 and 61,405.37 is: 92,108.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,580.68 : 111,871.02 = 61,405.37 : x
  2. Step 2: Convert to fraction form
    74,580.68/111,871.02 = 61,405.37/x
  3. Step 3: Cross multiply
    74,580.68x = 111,871.02 × 61,405.37
  4. Step 4: Simplify right side
    74,580.68x = 6,869,481,465.81
  5. Step 5: Solve for x
    x = 6,869,481,465.81/74,580.68
  6. Step 6: Final answer
    x = 92,108.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.