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Finding the Fourth Proportional to 215,192.50, 322,840.59 and 67,448.50

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Solution

The fourth proportional to 215,192.50, 322,840.59 and 67,448.50 is: 101,189.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,192.50 : 322,840.59 = 67,448.50 : x
  2. Step 2: Convert to fraction form
    215,192.50/322,840.59 = 67,448.50/x
  3. Step 3: Cross multiply
    215,192.50x = 322,840.59 × 67,448.50
  4. Step 4: Simplify right side
    215,192.50x = 21,775,113,534.62
  5. Step 5: Solve for x
    x = 21,775,113,534.62/215,192.50
  6. Step 6: Final answer
    x = 101,189.00

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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.