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Finding the Fourth Proportional to 694,189.68, 957,962.60 and 388,266.65

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Solution

The fourth proportional to 694,189.68, 957,962.60 and 388,266.65 is: 535,797.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,189.68 : 957,962.60 = 388,266.65 : x
  2. Step 2: Convert to fraction form
    694,189.68/957,962.60 = 388,266.65/x
  3. Step 3: Cross multiply
    694,189.68x = 957,962.60 × 388,266.65
  4. Step 4: Simplify right side
    694,189.68x = 371,944,927,844.50
  5. Step 5: Solve for x
    x = 371,944,927,844.50/694,189.68
  6. Step 6: Final answer
    x = 535,797.26

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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.