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Finding the Fourth Proportional to 75,548, 104,256.24 and 42,014

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Solution

The fourth proportional to 75,548, 104,256.24 and 42,014 is: 57,979.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,548 : 104,256.24 = 42,014 : x
  2. Step 2: Convert to fraction form
    75,548/104,256.24 = 42,014/x
  3. Step 3: Cross multiply
    75,548x = 104,256.24 × 42,014
  4. Step 4: Simplify right side
    75,548x = 4,380,221,667.36
  5. Step 5: Solve for x
    x = 4,380,221,667.36/75,548
  6. Step 6: Final answer
    x = 57,979.32

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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.