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Finding the Fourth Proportional to 695,782.08, 960,152.40 and 393,976.80

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Solution

The fourth proportional to 695,782.08, 960,152.40 and 393,976.80 is: 543,672.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,782.08 : 960,152.40 = 393,976.80 : x
  2. Step 2: Convert to fraction form
    695,782.08/960,152.40 = 393,976.80/x
  3. Step 3: Cross multiply
    695,782.08x = 960,152.40 × 393,976.80
  4. Step 4: Simplify right side
    695,782.08x = 378,277,770,064.32
  5. Step 5: Solve for x
    x = 378,277,770,064.32/695,782.08
  6. Step 6: Final answer
    x = 543,672.77

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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.