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Finding the Fourth Proportional to 112,425.60, 168,692.40 and 75,003.60

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Solution

The fourth proportional to 112,425.60, 168,692.40 and 75,003.60 is: 112,541.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,425.60 : 168,692.40 = 75,003.60 : x
  2. Step 2: Convert to fraction form
    112,425.60/168,692.40 = 75,003.60/x
  3. Step 3: Cross multiply
    112,425.60x = 168,692.40 × 75,003.60
  4. Step 4: Simplify right side
    112,425.60x = 12,652,537,292.64
  5. Step 5: Solve for x
    x = 12,652,537,292.64/112,425.60
  6. Step 6: Final answer
    x = 112,541.43

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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.