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Finding the Fourth Proportional to 678,763.83, 936,592.56 and 388,329.27

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Solution

The fourth proportional to 678,763.83, 936,592.56 and 388,329.27 is: 535,836.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,763.83 : 936,592.56 = 388,329.27 : x
  2. Step 2: Convert to fraction form
    678,763.83/936,592.56 = 388,329.27/x
  3. Step 3: Cross multiply
    678,763.83x = 936,592.56 × 388,329.27
  4. Step 4: Simplify right side
    678,763.83x = 363,706,305,112.23
  5. Step 5: Solve for x
    x = 363,706,305,112.23/678,763.83
  6. Step 6: Final answer
    x = 535,836.31

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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.