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Finding the Fourth Proportional to 104,758.56, 144,569.92 and 57,015.04

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Solution

The fourth proportional to 104,758.56, 144,569.92 and 57,015.04 is: 78,682.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,758.56 : 144,569.92 = 57,015.04 : x
  2. Step 2: Convert to fraction form
    104,758.56/144,569.92 = 57,015.04/x
  3. Step 3: Cross multiply
    104,758.56x = 144,569.92 × 57,015.04
  4. Step 4: Simplify right side
    104,758.56x = 8,242,659,771.60
  5. Step 5: Solve for x
    x = 8,242,659,771.60/104,758.56
  6. Step 6: Final answer
    x = 78,682.45

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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.