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Finding the Fourth Proportional to 694,085.36, 957,832.36 and 388,162.20

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Solution

The fourth proportional to 694,085.36, 957,832.36 and 388,162.20 is: 535,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,085.36 : 957,832.36 = 388,162.20 : x
  2. Step 2: Convert to fraction form
    694,085.36/957,832.36 = 388,162.20/x
  3. Step 3: Cross multiply
    694,085.36x = 957,832.36 × 388,162.20
  4. Step 4: Simplify right side
    694,085.36x = 371,794,316,088.79
  5. Step 5: Solve for x
    x = 371,794,316,088.79/694,085.36
  6. Step 6: Final answer
    x = 535,660.80

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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.