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Finding the Fourth Proportional to 112,580.84, 168,891.72 and 53,415.96

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Solution

The fourth proportional to 112,580.84, 168,891.72 and 53,415.96 is: 80,133.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,580.84 : 168,891.72 = 53,415.96 : x
  2. Step 2: Convert to fraction form
    112,580.84/168,891.72 = 53,415.96/x
  3. Step 3: Cross multiply
    112,580.84x = 168,891.72 × 53,415.96
  4. Step 4: Simplify right side
    112,580.84x = 9,021,512,526.20
  5. Step 5: Solve for x
    x = 9,021,512,526.20/112,580.84
  6. Step 6: Final answer
    x = 80,133.64

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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.