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Finding the Fourth Proportional to 445,516.70, 668,300.65 and 130,022.30

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Solution

The fourth proportional to 445,516.70, 668,300.65 and 130,022.30 is: 195,040.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,516.70 : 668,300.65 = 130,022.30 : x
  2. Step 2: Convert to fraction form
    445,516.70/668,300.65 = 130,022.30/x
  3. Step 3: Cross multiply
    445,516.70x = 668,300.65 × 130,022.30
  4. Step 4: Simplify right side
    445,516.70x = 86,893,987,604.50
  5. Step 5: Solve for x
    x = 86,893,987,604.50/445,516.70
  6. Step 6: Final answer
    x = 195,040.92

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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.