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Finding the Fourth Proportional to 344,455.20, 515,761.20 and 219,117.60

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Solution

The fourth proportional to 344,455.20, 515,761.20 and 219,117.60 is: 328,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,455.20 : 515,761.20 = 219,117.60 : x
  2. Step 2: Convert to fraction form
    344,455.20/515,761.20 = 219,117.60/x
  3. Step 3: Cross multiply
    344,455.20x = 515,761.20 × 219,117.60
  4. Step 4: Simplify right side
    344,455.20x = 113,012,356,317.12
  5. Step 5: Solve for x
    x = 113,012,356,317.12/344,455.20
  6. Step 6: Final answer
    x = 328,090.14

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1.5x scale

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.