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Finding the Fourth Proportional to 681,783.77, 940,864.49 and 375,853.16

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Solution

The fourth proportional to 681,783.77, 940,864.49 and 375,853.16 is: 518,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,783.77 : 940,864.49 = 375,853.16 : x
  2. Step 2: Convert to fraction form
    681,783.77/940,864.49 = 375,853.16/x
  3. Step 3: Cross multiply
    681,783.77x = 940,864.49 × 375,853.16
  4. Step 4: Simplify right side
    681,783.77x = 353,626,891,698.29
  5. Step 5: Solve for x
    x = 353,626,891,698.29/681,783.77
  6. Step 6: Final answer
    x = 518,678.95

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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.