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Finding the Fourth Proportional to 404,824.40, 606,847.80 and 314,817.20

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Solution

The fourth proportional to 404,824.40, 606,847.80 and 314,817.20 is: 471,923.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,824.40 : 606,847.80 = 314,817.20 : x
  2. Step 2: Convert to fraction form
    404,824.40/606,847.80 = 314,817.20/x
  3. Step 3: Cross multiply
    404,824.40x = 606,847.80 × 314,817.20
  4. Step 4: Simplify right side
    404,824.40x = 191,046,125,222.16
  5. Step 5: Solve for x
    x = 191,046,125,222.16/404,824.40
  6. Step 6: Final answer
    x = 471,923.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.