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Finding the Fourth Proportional to 628,138.80, 866,714.04 and 373,552.56

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Solution

The fourth proportional to 628,138.80, 866,714.04 and 373,552.56 is: 515,432.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,138.80 : 866,714.04 = 373,552.56 : x
  2. Step 2: Convert to fraction form
    628,138.80/866,714.04 = 373,552.56/x
  3. Step 3: Cross multiply
    628,138.80x = 866,714.04 × 373,552.56
  4. Step 4: Simplify right side
    628,138.80x = 323,763,248,429.94
  5. Step 5: Solve for x
    x = 323,763,248,429.94/628,138.80
  6. Step 6: Final answer
    x = 515,432.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.