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Finding the Fourth Proportional to 112,057.62, 154,639.52 and 61,756.62

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Solution

The fourth proportional to 112,057.62, 154,639.52 and 61,756.62 is: 85,224.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,057.62 : 154,639.52 = 61,756.62 : x
  2. Step 2: Convert to fraction form
    112,057.62/154,639.52 = 61,756.62/x
  3. Step 3: Cross multiply
    112,057.62x = 154,639.52 × 61,756.62
  4. Step 4: Simplify right side
    112,057.62x = 9,550,013,764.84
  5. Step 5: Solve for x
    x = 9,550,013,764.84/112,057.62
  6. Step 6: Final answer
    x = 85,224.14

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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.