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Finding the Fourth Proportional to 681,633.83, 940,611.89 and 375,693.38

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Solution

The fourth proportional to 681,633.83, 940,611.89 and 375,693.38 is: 518,433.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,633.83 : 940,611.89 = 375,693.38 : x
  2. Step 2: Convert to fraction form
    681,633.83/940,611.89 = 375,693.38/x
  3. Step 3: Cross multiply
    681,633.83x = 940,611.89 × 375,693.38
  4. Step 4: Simplify right side
    681,633.83x = 353,381,660,222.29
  5. Step 5: Solve for x
    x = 353,381,660,222.29/681,633.83
  6. Step 6: Final answer
    x = 518,433.28

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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.