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Finding the Fourth Proportional to 661,058.62, 911,925.10 and 431,750.25

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Solution

The fourth proportional to 661,058.62, 911,925.10 and 431,750.25 is: 595,596.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,058.62 : 911,925.10 = 431,750.25 : x
  2. Step 2: Convert to fraction form
    661,058.62/911,925.10 = 431,750.25/x
  3. Step 3: Cross multiply
    661,058.62x = 911,925.10 × 431,750.25
  4. Step 4: Simplify right side
    661,058.62x = 393,723,889,906.28
  5. Step 5: Solve for x
    x = 393,723,889,906.28/661,058.62
  6. Step 6: Final answer
    x = 595,596.03

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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.