Home / 85,517.60-128,276.40-23,188.10

Finding the Fourth Proportional to 85,517.60, 128,276.40 and 23,188.10

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Solution

The fourth proportional to 85,517.60, 128,276.40 and 23,188.10 is: 34,782.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,517.60 : 128,276.40 = 23,188.10 : x
  2. Step 2: Convert to fraction form
    85,517.60/128,276.40 = 23,188.10/x
  3. Step 3: Cross multiply
    85,517.60x = 128,276.40 × 23,188.10
  4. Step 4: Simplify right side
    85,517.60x = 2,974,485,990.84
  5. Step 5: Solve for x
    x = 2,974,485,990.84/85,517.60
  6. Step 6: Final answer
    x = 34,782.15

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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.