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Finding the Fourth Proportional to 61,025.60, 91,522.20 and 18,905.60

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Solution

The fourth proportional to 61,025.60, 91,522.20 and 18,905.60 is: 28,353.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,025.60 : 91,522.20 = 18,905.60 : x
  2. Step 2: Convert to fraction form
    61,025.60/91,522.20 = 18,905.60/x
  3. Step 3: Cross multiply
    61,025.60x = 91,522.20 × 18,905.60
  4. Step 4: Simplify right side
    61,025.60x = 1,730,282,104.32
  5. Step 5: Solve for x
    x = 1,730,282,104.32/61,025.60
  6. Step 6: Final answer
    x = 28,353.38

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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.