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Finding the Fourth Proportional to 18,762.94, 25,892.87 and 10,805.00

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Solution

The fourth proportional to 18,762.94, 25,892.87 and 10,805.00 is: 14,910.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.94 : 25,892.87 = 10,805.00 : x
  2. Step 2: Convert to fraction form
    18,762.94/25,892.87 = 10,805.00/x
  3. Step 3: Cross multiply
    18,762.94x = 25,892.87 × 10,805.00
  4. Step 4: Simplify right side
    18,762.94x = 279,772,276.86
  5. Step 5: Solve for x
    x = 279,772,276.86/18,762.94
  6. Step 6: Final answer
    x = 14,910.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.