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Finding the Fourth Proportional to 144,485.51, 216,742.84 and 54,505.64

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Solution

The fourth proportional to 144,485.51, 216,742.84 and 54,505.64 is: 81,763.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,485.51 : 216,742.84 = 54,505.64 : x
  2. Step 2: Convert to fraction form
    144,485.51/216,742.84 = 54,505.64/x
  3. Step 3: Cross multiply
    144,485.51x = 216,742.84 × 54,505.64
  4. Step 4: Simplify right side
    144,485.51x = 11,813,707,615.21
  5. Step 5: Solve for x
    x = 11,813,707,615.21/144,485.51
  6. Step 6: Final answer
    x = 81,763.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.