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Finding the Fourth Proportional to 117,805.12, 162,572.64 and 67,504

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Solution

The fourth proportional to 117,805.12, 162,572.64 and 67,504 is: 93,156.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,805.12 : 162,572.64 = 67,504 : x
  2. Step 2: Convert to fraction form
    117,805.12/162,572.64 = 67,504/x
  3. Step 3: Cross multiply
    117,805.12x = 162,572.64 × 67,504
  4. Step 4: Simplify right side
    117,805.12x = 10,974,303,490.56
  5. Step 5: Solve for x
    x = 10,974,303,490.56/117,805.12
  6. Step 6: Final answer
    x = 93,156.42

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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.