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Finding the Fourth Proportional to 488,573.60, 731,823.60 and 405,629.60

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Solution

The fourth proportional to 488,573.60, 731,823.60 and 405,629.60 is: 607,583.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,573.60 : 731,823.60 = 405,629.60 : x
  2. Step 2: Convert to fraction form
    488,573.60/731,823.60 = 405,629.60/x
  3. Step 3: Cross multiply
    488,573.60x = 731,823.60 × 405,629.60
  4. Step 4: Simplify right side
    488,573.60x = 296,849,314,138.56
  5. Step 5: Solve for x
    x = 296,849,314,138.56/488,573.60
  6. Step 6: Final answer
    x = 607,583.62

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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.