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Finding the Fourth Proportional to 96,692.40, 145,427.40 and 86,583.60

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Solution

The fourth proportional to 96,692.40, 145,427.40 and 86,583.60 is: 130,223.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,692.40 : 145,427.40 = 86,583.60 : x
  2. Step 2: Convert to fraction form
    96,692.40/145,427.40 = 86,583.60/x
  3. Step 3: Cross multiply
    96,692.40x = 145,427.40 × 86,583.60
  4. Step 4: Simplify right side
    96,692.40x = 12,591,627,830.64
  5. Step 5: Solve for x
    x = 12,591,627,830.64/96,692.40
  6. Step 6: Final answer
    x = 130,223.55

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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.