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Finding the Fourth Proportional to 100,602,246.80, 150,903,370.20 and 82,426,964.60

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Solution

The fourth proportional to 100,602,246.80, 150,903,370.20 and 82,426,964.60 is: 123,640,446.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,602,246.80 : 150,903,370.20 = 82,426,964.60 : x
  2. Step 2: Convert to fraction form
    100,602,246.80/150,903,370.20 = 82,426,964.60/x
  3. Step 3: Cross multiply
    100,602,246.80x = 150,903,370.20 × 82,426,964.60
  4. Step 4: Simplify right side
    100,602,246.80x = 12,438,506,753,496,094
  5. Step 5: Solve for x
    x = 12,438,506,753,496,094/100,602,246.80
  6. Step 6: Final answer
    x = 123,640,446.90

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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.