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Finding the Fourth Proportional to 258,203.88, 356,221.80 and 190,381.77

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Solution

The fourth proportional to 258,203.88, 356,221.80 and 190,381.77 is: 262,653.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,203.88 : 356,221.80 = 190,381.77 : x
  2. Step 2: Convert to fraction form
    258,203.88/356,221.80 = 190,381.77/x
  3. Step 3: Cross multiply
    258,203.88x = 356,221.80 × 190,381.77
  4. Step 4: Simplify right side
    258,203.88x = 67,818,136,796.59
  5. Step 5: Solve for x
    x = 67,818,136,796.59/258,203.88
  6. Step 6: Final answer
    x = 262,653.44

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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.