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Finding the Fourth Proportional to 103,923.60, 156,000.60 and 64,525.20

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Solution

The fourth proportional to 103,923.60, 156,000.60 and 64,525.20 is: 96,859.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,923.60 : 156,000.60 = 64,525.20 : x
  2. Step 2: Convert to fraction form
    103,923.60/156,000.60 = 64,525.20/x
  3. Step 3: Cross multiply
    103,923.60x = 156,000.60 × 64,525.20
  4. Step 4: Simplify right side
    103,923.60x = 10,065,969,915.12
  5. Step 5: Solve for x
    x = 10,065,969,915.12/103,923.60
  6. Step 6: Final answer
    x = 96,859.33

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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.