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Finding the Fourth Proportional to 692,436.15, 955,393.60 and 405,900.88

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Solution

The fourth proportional to 692,436.15, 955,393.60 and 405,900.88 is: 560,044.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,436.15 : 955,393.60 = 405,900.88 : x
  2. Step 2: Convert to fraction form
    692,436.15/955,393.60 = 405,900.88/x
  3. Step 3: Cross multiply
    692,436.15x = 955,393.60 × 405,900.88
  4. Step 4: Simplify right side
    692,436.15x = 387,795,100,587.84
  5. Step 5: Solve for x
    x = 387,795,100,587.84/692,436.15
  6. Step 6: Final answer
    x = 560,044.56

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1.5x scale

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.