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Finding the Fourth Proportional to 365,821.70, 512,500.30 and 365,821.70

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Solution

The fourth proportional to 365,821.70, 512,500.30 and 365,821.70 is: 512,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,821.70 : 512,500.30 = 365,821.70 : x
  2. Step 2: Convert to fraction form
    365,821.70/512,500.30 = 365,821.70/x
  3. Step 3: Cross multiply
    365,821.70x = 512,500.30 × 365,821.70
  4. Step 4: Simplify right side
    365,821.70x = 187,483,730,996.51
  5. Step 5: Solve for x
    x = 187,483,730,996.51/365,821.70
  6. Step 6: Final answer
    x = 512,500.30

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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.