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Finding the Fourth Proportional to 688,795.78, 950,555.73 and 378,694.57

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Solution

The fourth proportional to 688,795.78, 950,555.73 and 378,694.57 is: 522,608.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,795.78 : 950,555.73 = 378,694.57 : x
  2. Step 2: Convert to fraction form
    688,795.78/950,555.73 = 378,694.57/x
  3. Step 3: Cross multiply
    688,795.78x = 950,555.73 × 378,694.57
  4. Step 4: Simplify right side
    688,795.78x = 359,970,292,477.10
  5. Step 5: Solve for x
    x = 359,970,292,477.10/688,795.78
  6. Step 6: Final answer
    x = 522,608.16

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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.