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Finding the Fourth Proportional to 456,100.80, 683,921.70 and 140,516.70

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Solution

The fourth proportional to 456,100.80, 683,921.70 and 140,516.70 is: 210,704.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,100.80 : 683,921.70 = 140,516.70 : x
  2. Step 2: Convert to fraction form
    456,100.80/683,921.70 = 140,516.70/x
  3. Step 3: Cross multiply
    456,100.80x = 683,921.70 × 140,516.70
  4. Step 4: Simplify right side
    456,100.80x = 96,102,420,342.39
  5. Step 5: Solve for x
    x = 96,102,420,342.39/456,100.80
  6. Step 6: Final answer
    x = 210,704.35

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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.