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Finding the Fourth Proportional to 679,205.33, 937,283.54 and 388,807.27

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Solution

The fourth proportional to 679,205.33, 937,283.54 and 388,807.27 is: 536,542.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,205.33 : 937,283.54 = 388,807.27 : x
  2. Step 2: Convert to fraction form
    679,205.33/937,283.54 = 388,807.27/x
  3. Step 3: Cross multiply
    679,205.33x = 937,283.54 × 388,807.27
  4. Step 4: Simplify right side
    679,205.33x = 364,422,654,403.34
  5. Step 5: Solve for x
    x = 364,422,654,403.34/679,205.33
  6. Step 6: Final answer
    x = 536,542.69

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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.