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Finding the Fourth Proportional to 191,505.43, 263,706.87 and 187,256.98

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Solution

The fourth proportional to 191,505.43, 263,706.87 and 187,256.98 is: 257,856.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,505.43 : 263,706.87 = 187,256.98 : x
  2. Step 2: Convert to fraction form
    191,505.43/263,706.87 = 187,256.98/x
  3. Step 3: Cross multiply
    191,505.43x = 263,706.87 × 187,256.98
  4. Step 4: Simplify right side
    191,505.43x = 49,380,952,081.45
  5. Step 5: Solve for x
    x = 49,380,952,081.45/191,505.43
  6. Step 6: Final answer
    x = 257,856.67

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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.