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Finding the Fourth Proportional to 76,038.75, 104,933.48 and 42,504.75

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Solution

The fourth proportional to 76,038.75, 104,933.48 and 42,504.75 is: 58,656.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,038.75 : 104,933.48 = 42,504.75 : x
  2. Step 2: Convert to fraction form
    76,038.75/104,933.48 = 42,504.75/x
  3. Step 3: Cross multiply
    76,038.75x = 104,933.48 × 42,504.75
  4. Step 4: Simplify right side
    76,038.75x = 4,460,171,121.51
  5. Step 5: Solve for x
    x = 4,460,171,121.51/76,038.75
  6. Step 6: Final answer
    x = 58,656.56

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1.5x scale

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.