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Finding the Fourth Proportional to 646,489.88, 969,735.57 and 197,186.96

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Solution

The fourth proportional to 646,489.88, 969,735.57 and 197,186.96 is: 295,780.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,489.88 : 969,735.57 = 197,186.96 : x
  2. Step 2: Convert to fraction form
    646,489.88/969,735.57 = 197,186.96/x
  3. Step 3: Cross multiply
    646,489.88x = 969,735.57 × 197,186.96
  4. Step 4: Simplify right side
    646,489.88x = 191,219,209,052.17
  5. Step 5: Solve for x
    x = 191,219,209,052.17/646,489.88
  6. Step 6: Final answer
    x = 295,780.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.