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Finding the Fourth Proportional to 404,166.40, 605,860.80 and 314,159.20

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Solution

The fourth proportional to 404,166.40, 605,860.80 and 314,159.20 is: 470,936.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,166.40 : 605,860.80 = 314,159.20 : x
  2. Step 2: Convert to fraction form
    404,166.40/605,860.80 = 314,159.20/x
  3. Step 3: Cross multiply
    404,166.40x = 605,860.80 × 314,159.20
  4. Step 4: Simplify right side
    404,166.40x = 190,336,744,239.36
  5. Step 5: Solve for x
    x = 190,336,744,239.36/404,166.40
  6. Step 6: Final answer
    x = 470,936.59

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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.