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Finding the Fourth Proportional to 64,072.95, 88,420.31 and 35,394.58

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Solution

The fourth proportional to 64,072.95, 88,420.31 and 35,394.58 is: 48,844.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,072.95 : 88,420.31 = 35,394.58 : x
  2. Step 2: Convert to fraction form
    64,072.95/88,420.31 = 35,394.58/x
  3. Step 3: Cross multiply
    64,072.95x = 88,420.31 × 35,394.58
  4. Step 4: Simplify right side
    64,072.95x = 3,129,599,293.82
  5. Step 5: Solve for x
    x = 3,129,599,293.82/64,072.95
  6. Step 6: Final answer
    x = 48,844.32

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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.