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Finding the Fourth Proportional to 694,973.17, 959,009.99 and 388,979.47

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Solution

The fourth proportional to 694,973.17, 959,009.99 and 388,979.47 is: 536,762.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,973.17 : 959,009.99 = 388,979.47 : x
  2. Step 2: Convert to fraction form
    694,973.17/959,009.99 = 388,979.47/x
  3. Step 3: Cross multiply
    694,973.17x = 959,009.99 × 388,979.47
  4. Step 4: Simplify right side
    694,973.17x = 373,035,197,634.91
  5. Step 5: Solve for x
    x = 373,035,197,634.91/694,973.17
  6. Step 6: Final answer
    x = 536,762.01

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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.