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Finding the Fourth Proportional to 515,911.60, 773,608.20 and 235,111.60

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Solution

The fourth proportional to 515,911.60, 773,608.20 and 235,111.60 is: 352,549.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,911.60 : 773,608.20 = 235,111.60 : x
  2. Step 2: Convert to fraction form
    515,911.60/773,608.20 = 235,111.60/x
  3. Step 3: Cross multiply
    515,911.60x = 773,608.20 × 235,111.60
  4. Step 4: Simplify right side
    515,911.60x = 181,884,261,675.12
  5. Step 5: Solve for x
    x = 181,884,261,675.12/515,911.60
  6. Step 6: Final answer
    x = 352,549.28

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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.