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Finding the Fourth Proportional to 111,834, 154,331.28 and 61,533.36

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Solution

The fourth proportional to 111,834, 154,331.28 and 61,533.36 is: 84,916.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,834 : 154,331.28 = 61,533.36 : x
  2. Step 2: Convert to fraction form
    111,834/154,331.28 = 61,533.36/x
  3. Step 3: Cross multiply
    111,834x = 154,331.28 × 61,533.36
  4. Step 4: Simplify right side
    111,834x = 9,496,522,211.50
  5. Step 5: Solve for x
    x = 9,496,522,211.50/111,834
  6. Step 6: Final answer
    x = 84,916.23

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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.