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Finding the Fourth Proportional to 134,433.15, 201,774.47 and 67,920

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Solution

The fourth proportional to 134,433.15, 201,774.47 and 67,920 is: 101,943.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,433.15 : 201,774.47 = 67,920 : x
  2. Step 2: Convert to fraction form
    134,433.15/201,774.47 = 67,920/x
  3. Step 3: Cross multiply
    134,433.15x = 201,774.47 × 67,920
  4. Step 4: Simplify right side
    134,433.15x = 13,704,521,662.80
  5. Step 5: Solve for x
    x = 13,704,521,662.80/134,433.15
  6. Step 6: Final answer
    x = 101,943.02

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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.