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Finding the Fourth Proportional to 693,976.22, 957,681.77 and 388,053.19

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Solution

The fourth proportional to 693,976.22, 957,681.77 and 388,053.19 is: 535,510.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,976.22 : 957,681.77 = 388,053.19 : x
  2. Step 2: Convert to fraction form
    693,976.22/957,681.77 = 388,053.19/x
  3. Step 3: Cross multiply
    693,976.22x = 957,681.77 × 388,053.19
  4. Step 4: Simplify right side
    693,976.22x = 371,631,470,414.79
  5. Step 5: Solve for x
    x = 371,631,470,414.79/693,976.22
  6. Step 6: Final answer
    x = 535,510.38

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Double scale
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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.