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Finding the Fourth Proportional to 134,774.46, 185,978.43 and 74,347.38

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Solution

The fourth proportional to 134,774.46, 185,978.43 and 74,347.38 is: 102,593.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,774.46 : 185,978.43 = 74,347.38 : x
  2. Step 2: Convert to fraction form
    134,774.46/185,978.43 = 74,347.38/x
  3. Step 3: Cross multiply
    134,774.46x = 185,978.43 × 74,347.38
  4. Step 4: Simplify right side
    134,774.46x = 13,827,009,007.01
  5. Step 5: Solve for x
    x = 13,827,009,007.01/134,774.46
  6. Step 6: Final answer
    x = 102,593.69

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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.