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Finding the Fourth Proportional to 134,431.65, 201,772.22 and 67,918.50

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Solution

The fourth proportional to 134,431.65, 201,772.22 and 67,918.50 is: 101,940.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,431.65 : 201,772.22 = 67,918.50 : x
  2. Step 2: Convert to fraction form
    134,431.65/201,772.22 = 67,918.50/x
  3. Step 3: Cross multiply
    134,431.65x = 201,772.22 × 67,918.50
  4. Step 4: Simplify right side
    134,431.65x = 13,704,066,184.48
  5. Step 5: Solve for x
    x = 13,704,066,184.48/134,431.65
  6. Step 6: Final answer
    x = 101,940.77

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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.