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Finding the Fourth Proportional to 90,552.33, 124,978.14 and 52,313.32

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Solution

The fourth proportional to 90,552.33, 124,978.14 and 52,313.32 is: 72,201.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,552.33 : 124,978.14 = 52,313.32 : x
  2. Step 2: Convert to fraction form
    90,552.33/124,978.14 = 52,313.32/x
  3. Step 3: Cross multiply
    90,552.33x = 124,978.14 × 52,313.32
  4. Step 4: Simplify right side
    90,552.33x = 6,538,021,235.55
  5. Step 5: Solve for x
    x = 6,538,021,235.55/90,552.33
  6. Step 6: Final answer
    x = 72,201.58

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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.