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Finding the Fourth Proportional to 694,187.10, 957,971.76 and 388,259.82

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Solution

The fourth proportional to 694,187.10, 957,971.76 and 388,259.82 is: 535,794.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,187.10 : 957,971.76 = 388,259.82 : x
  2. Step 2: Convert to fraction form
    694,187.10/957,971.76 = 388,259.82/x
  3. Step 3: Cross multiply
    694,187.10x = 957,971.76 × 388,259.82
  4. Step 4: Simplify right side
    694,187.10x = 371,941,943,102.68
  5. Step 5: Solve for x
    x = 371,941,943,102.68/694,187.10
  6. Step 6: Final answer
    x = 535,794.95

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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.