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Finding the Fourth Proportional to 681,739.88, 940,805.70 and 379,953.32

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Solution

The fourth proportional to 681,739.88, 940,805.70 and 379,953.32 is: 524,338.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,739.88 : 940,805.70 = 379,953.32 : x
  2. Step 2: Convert to fraction form
    681,739.88/940,805.70 = 379,953.32/x
  3. Step 3: Cross multiply
    681,739.88x = 940,805.70 × 379,953.32
  4. Step 4: Simplify right side
    681,739.88x = 357,462,249,189.92
  5. Step 5: Solve for x
    x = 357,462,249,189.92/681,739.88
  6. Step 6: Final answer
    x = 524,338.18

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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.