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Finding the Fourth Proportional to 253,600.11, 349,963.86 and 140,420.43

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Solution

The fourth proportional to 253,600.11, 349,963.86 and 140,420.43 is: 193,777.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,600.11 : 349,963.86 = 140,420.43 : x
  2. Step 2: Convert to fraction form
    253,600.11/349,963.86 = 140,420.43/x
  3. Step 3: Cross multiply
    253,600.11x = 349,963.86 × 140,420.43
  4. Step 4: Simplify right side
    253,600.11x = 49,142,075,705.66
  5. Step 5: Solve for x
    x = 49,142,075,705.66/253,600.11
  6. Step 6: Final answer
    x = 193,777.82

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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.