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Finding the Fourth Proportional to 18,957.98, 26,148.47 and 16,435.58

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Solution

The fourth proportional to 18,957.98, 26,148.47 and 16,435.58 is: 22,669.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.98 : 26,148.47 = 16,435.58 : x
  2. Step 2: Convert to fraction form
    18,957.98/26,148.47 = 16,435.58/x
  3. Step 3: Cross multiply
    18,957.98x = 26,148.47 × 16,435.58
  4. Step 4: Simplify right side
    18,957.98x = 429,765,270.56
  5. Step 5: Solve for x
    x = 429,765,270.56/18,957.98
  6. Step 6: Final answer
    x = 22,669.36

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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.