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Finding the Fourth Proportional to 511,161.03, 705,406.86 and 281,726.51

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Solution

The fourth proportional to 511,161.03, 705,406.86 and 281,726.51 is: 388,785.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,161.03 : 705,406.86 = 281,726.51 : x
  2. Step 2: Convert to fraction form
    511,161.03/705,406.86 = 281,726.51/x
  3. Step 3: Cross multiply
    511,161.03x = 705,406.86 × 281,726.51
  4. Step 4: Simplify right side
    511,161.03x = 198,731,809,270.82
  5. Step 5: Solve for x
    x = 198,731,809,270.82/511,161.03
  6. Step 6: Final answer
    x = 388,785.13

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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.