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Finding the Fourth Proportional to 511,146.01, 705,386.26 and 281,711.48

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Solution

The fourth proportional to 511,146.01, 705,386.26 and 281,711.48 is: 388,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,146.01 : 705,386.26 = 281,711.48 : x
  2. Step 2: Convert to fraction form
    511,146.01/705,386.26 = 281,711.48/x
  3. Step 3: Cross multiply
    511,146.01x = 705,386.26 × 281,711.48
  4. Step 4: Simplify right side
    511,146.01x = 198,715,407,276.27
  5. Step 5: Solve for x
    x = 198,715,407,276.27/511,146.01
  6. Step 6: Final answer
    x = 388,764.47

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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.