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Finding the Fourth Proportional to 505,175.42, 757,220.81 and 251,955.66

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Solution

The fourth proportional to 505,175.42, 757,220.81 and 251,955.66 is: 377,663.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,175.42 : 757,220.81 = 251,955.66 : x
  2. Step 2: Convert to fraction form
    505,175.42/757,220.81 = 251,955.66/x
  3. Step 3: Cross multiply
    505,175.42x = 757,220.81 × 251,955.66
  4. Step 4: Simplify right side
    505,175.42x = 190,786,070,529.08
  5. Step 5: Solve for x
    x = 190,786,070,529.08/505,175.42
  6. Step 6: Final answer
    x = 377,663.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.