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Finding the Fourth Proportional to 18,675.58, 25,762.28 and 11,953.97

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Solution

The fourth proportional to 18,675.58, 25,762.28 and 11,953.97 is: 16,490.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.58 : 25,762.28 = 11,953.97 : x
  2. Step 2: Convert to fraction form
    18,675.58/25,762.28 = 11,953.97/x
  3. Step 3: Cross multiply
    18,675.58x = 25,762.28 × 11,953.97
  4. Step 4: Simplify right side
    18,675.58x = 307,961,526.89
  5. Step 5: Solve for x
    x = 307,961,526.89/18,675.58
  6. Step 6: Final answer
    x = 16,490.07

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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.