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Finding the Fourth Proportional to 382,963.63, 528,493.66 and 210,897.59

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Solution

The fourth proportional to 382,963.63, 528,493.66 and 210,897.59 is: 291,040.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,963.63 : 528,493.66 = 210,897.59 : x
  2. Step 2: Convert to fraction form
    382,963.63/528,493.66 = 210,897.59/x
  3. Step 3: Cross multiply
    382,963.63x = 528,493.66 × 210,897.59
  4. Step 4: Simplify right side
    382,963.63x = 111,458,039,224.28
  5. Step 5: Solve for x
    x = 111,458,039,224.28/382,963.63
  6. Step 6: Final answer
    x = 291,040.79

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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.