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Finding the Fourth Proportional to 681,638.00, 940,617.65 and 375,697.53

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Solution

The fourth proportional to 681,638.00, 940,617.65 and 375,697.53 is: 518,439.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,638.00 : 940,617.65 = 375,697.53 : x
  2. Step 2: Convert to fraction form
    681,638.00/940,617.65 = 375,697.53/x
  3. Step 3: Cross multiply
    681,638.00x = 940,617.65 × 375,697.53
  4. Step 4: Simplify right side
    681,638.00x = 353,387,728,718.65
  5. Step 5: Solve for x
    x = 353,387,728,718.65/681,638.00
  6. Step 6: Final answer
    x = 518,439.01

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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.