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Finding the Fourth Proportional to 186,861.99, 280,284.02 and 85,601.60

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Solution

The fourth proportional to 186,861.99, 280,284.02 and 85,601.60 is: 128,398.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,861.99 : 280,284.02 = 85,601.60 : x
  2. Step 2: Convert to fraction form
    186,861.99/280,284.02 = 85,601.60/x
  3. Step 3: Cross multiply
    186,861.99x = 280,284.02 × 85,601.60
  4. Step 4: Simplify right side
    186,861.99x = 23,992,758,737.00
  5. Step 5: Solve for x
    x = 23,992,758,737.00/186,861.99
  6. Step 6: Final answer
    x = 128,398.28

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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.