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Finding the Fourth Proportional to 503,331.81, 694,627.82 and 288,485.69

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Solution

The fourth proportional to 503,331.81, 694,627.82 and 288,485.69 is: 398,127.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,331.81 : 694,627.82 = 288,485.69 : x
  2. Step 2: Convert to fraction form
    503,331.81/694,627.82 = 288,485.69/x
  3. Step 3: Cross multiply
    503,331.81x = 694,627.82 × 288,485.69
  4. Step 4: Simplify right side
    503,331.81x = 200,390,181,030.33
  5. Step 5: Solve for x
    x = 200,390,181,030.33/503,331.81
  6. Step 6: Final answer
    x = 398,127.39

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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.