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Finding the Fourth Proportional to 401,608.26, 554,594.45 and 258,619.77

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Solution

The fourth proportional to 401,608.26, 554,594.45 and 258,619.77 is: 357,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,608.26 : 554,594.45 = 258,619.77 : x
  2. Step 2: Convert to fraction form
    401,608.26/554,594.45 = 258,619.77/x
  3. Step 3: Cross multiply
    401,608.26x = 554,594.45 × 258,619.77
  4. Step 4: Simplify right side
    401,608.26x = 143,429,087,809.18
  5. Step 5: Solve for x
    x = 143,429,087,809.18/401,608.26
  6. Step 6: Final answer
    x = 357,136.80

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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.