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Finding the Fourth Proportional to 253,611.77, 349,994.79 and 140,434.52

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Solution

The fourth proportional to 253,611.77, 349,994.79 and 140,434.52 is: 193,805.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,611.77 : 349,994.79 = 140,434.52 : x
  2. Step 2: Convert to fraction form
    253,611.77/349,994.79 = 140,434.52/x
  3. Step 3: Cross multiply
    253,611.77x = 349,994.79 × 140,434.52
  4. Step 4: Simplify right side
    253,611.77x = 49,151,350,336.15
  5. Step 5: Solve for x
    x = 49,151,350,336.15/253,611.77
  6. Step 6: Final answer
    x = 193,805.48

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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.