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Finding the Fourth Proportional to 366,813.90, 512,489.70 and 366,813.90

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Solution

The fourth proportional to 366,813.90, 512,489.70 and 366,813.90 is: 512,489.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,813.90 : 512,489.70 = 366,813.90 : x
  2. Step 2: Convert to fraction form
    366,813.90/512,489.70 = 366,813.90/x
  3. Step 3: Cross multiply
    366,813.90x = 512,489.70 × 366,813.90
  4. Step 4: Simplify right side
    366,813.90x = 187,988,345,566.83
  5. Step 5: Solve for x
    x = 187,988,345,566.83/366,813.90
  6. Step 6: Final answer
    x = 512,489.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.