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Finding the Fourth Proportional to 401,075.80, 601,613.70 and 322,343.80

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Solution

The fourth proportional to 401,075.80, 601,613.70 and 322,343.80 is: 483,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,075.80 : 601,613.70 = 322,343.80 : x
  2. Step 2: Convert to fraction form
    401,075.80/601,613.70 = 322,343.80/x
  3. Step 3: Cross multiply
    401,075.80x = 601,613.70 × 322,343.80
  4. Step 4: Simplify right side
    401,075.80x = 193,926,446,190.06
  5. Step 5: Solve for x
    x = 193,926,446,190.06/401,075.80
  6. Step 6: Final answer
    x = 483,515.70

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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.