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Finding the Fourth Proportional to 511,250.19, 705,493.12 and 281,794.84

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Solution

The fourth proportional to 511,250.19, 705,493.12 and 281,794.84 is: 388,859.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,250.19 : 705,493.12 = 281,794.84 : x
  2. Step 2: Convert to fraction form
    511,250.19/705,493.12 = 281,794.84/x
  3. Step 3: Cross multiply
    511,250.19x = 705,493.12 × 281,794.84
  4. Step 4: Simplify right side
    511,250.19x = 198,804,320,871.50
  5. Step 5: Solve for x
    x = 198,804,320,871.50/511,250.19
  6. Step 6: Final answer
    x = 388,859.16

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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.