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Finding the Fourth Proportional to 640,411.30, 959,234.55 and 529,819.30

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Solution

The fourth proportional to 640,411.30, 959,234.55 and 529,819.30 is: 793,585.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,411.30 : 959,234.55 = 529,819.30 : x
  2. Step 2: Convert to fraction form
    640,411.30/959,234.55 = 529,819.30/x
  3. Step 3: Cross multiply
    640,411.30x = 959,234.55 × 529,819.30
  4. Step 4: Simplify right side
    640,411.30x = 508,220,977,816.82
  5. Step 5: Solve for x
    x = 508,220,977,816.82/640,411.30
  6. Step 6: Final answer
    x = 793,585.28

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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.