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Finding the Fourth Proportional to 312,035.82, 430,611.54 and 191,177.34

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Solution

The fourth proportional to 312,035.82, 430,611.54 and 191,177.34 is: 263,826.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,035.82 : 430,611.54 = 191,177.34 : x
  2. Step 2: Convert to fraction form
    312,035.82/430,611.54 = 191,177.34/x
  3. Step 3: Cross multiply
    312,035.82x = 430,611.54 × 191,177.34
  4. Step 4: Simplify right side
    312,035.82x = 82,323,168,790.50
  5. Step 5: Solve for x
    x = 82,323,168,790.50/312,035.82
  6. Step 6: Final answer
    x = 263,826.02

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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.