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Finding the Fourth Proportional to 113,979.95, 171,019.13 and 61,378.95

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Solution

The fourth proportional to 113,979.95, 171,019.13 and 61,378.95 is: 92,094.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,979.95 : 171,019.13 = 61,378.95 : x
  2. Step 2: Convert to fraction form
    113,979.95/171,019.13 = 61,378.95/x
  3. Step 3: Cross multiply
    113,979.95x = 171,019.13 × 61,378.95
  4. Step 4: Simplify right side
    113,979.95x = 10,496,974,629.31
  5. Step 5: Solve for x
    x = 10,496,974,629.31/113,979.95
  6. Step 6: Final answer
    x = 92,094.92

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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.