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Finding the Fourth Proportional to 511,130.85, 705,365.39 and 281,696.41

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Solution

The fourth proportional to 511,130.85, 705,365.39 and 281,696.41 is: 388,743.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,130.85 : 705,365.39 = 281,696.41 : x
  2. Step 2: Convert to fraction form
    511,130.85/705,365.39 = 281,696.41/x
  3. Step 3: Cross multiply
    511,130.85x = 705,365.39 × 281,696.41
  4. Step 4: Simplify right side
    511,130.85x = 198,698,898,101.25
  5. Step 5: Solve for x
    x = 198,698,898,101.25/511,130.85
  6. Step 6: Final answer
    x = 388,743.70

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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.