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Finding the Fourth Proportional to 111,856.44, 154,362.19 and 61,555.44

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Solution

The fourth proportional to 111,856.44, 154,362.19 and 61,555.44 is: 84,946.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,856.44 : 154,362.19 = 61,555.44 : x
  2. Step 2: Convert to fraction form
    111,856.44/154,362.19 = 61,555.44/x
  3. Step 3: Cross multiply
    111,856.44x = 154,362.19 × 61,555.44
  4. Step 4: Simplify right side
    111,856.44x = 9,501,832,524.81
  5. Step 5: Solve for x
    x = 9,501,832,524.81/111,856.44
  6. Step 6: Final answer
    x = 84,946.67

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1.5x scale

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.