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Finding the Fourth Proportional to 112,504.95, 168,646.46 and 45,903.51

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Solution

The fourth proportional to 112,504.95, 168,646.46 and 45,903.51 is: 68,809.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,504.95 : 168,646.46 = 45,903.51 : x
  2. Step 2: Convert to fraction form
    112,504.95/168,646.46 = 45,903.51/x
  3. Step 3: Cross multiply
    112,504.95x = 168,646.46 × 45,903.51
  4. Step 4: Simplify right side
    112,504.95x = 7,741,464,233.56
  5. Step 5: Solve for x
    x = 7,741,464,233.56/112,504.95
  6. Step 6: Final answer
    x = 68,809.99

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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.