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Finding the Fourth Proportional to 104,431.80, 156,647.70 and 64,968.60

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Solution

The fourth proportional to 104,431.80, 156,647.70 and 64,968.60 is: 97,452.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,431.80 : 156,647.70 = 64,968.60 : x
  2. Step 2: Convert to fraction form
    104,431.80/156,647.70 = 64,968.60/x
  3. Step 3: Cross multiply
    104,431.80x = 156,647.70 × 64,968.60
  4. Step 4: Simplify right side
    104,431.80x = 10,177,181,762.22
  5. Step 5: Solve for x
    x = 10,177,181,762.22/104,431.80
  6. Step 6: Final answer
    x = 97,452.90

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1.5x scale

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.