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Finding the Fourth Proportional to 511,173.60, 705,424.32 and 281,739.24

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Solution

The fourth proportional to 511,173.60, 705,424.32 and 281,739.24 is: 388,802.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,173.60 : 705,424.32 = 281,739.24 : x
  2. Step 2: Convert to fraction form
    511,173.60/705,424.32 = 281,739.24/x
  3. Step 3: Cross multiply
    511,173.60x = 705,424.32 × 281,739.24
  4. Step 4: Simplify right side
    511,173.60x = 198,745,711,794.32
  5. Step 5: Solve for x
    x = 198,745,711,794.32/511,173.60
  6. Step 6: Final answer
    x = 388,802.77

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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.