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Finding the Fourth Proportional to 32,957.69, 45,481.80 and 18,421.86

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Solution

The fourth proportional to 32,957.69, 45,481.80 and 18,421.86 is: 25,422.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,957.69 : 45,481.80 = 18,421.86 : x
  2. Step 2: Convert to fraction form
    32,957.69/45,481.80 = 18,421.86/x
  3. Step 3: Cross multiply
    32,957.69x = 45,481.80 × 18,421.86
  4. Step 4: Simplify right side
    32,957.69x = 837,859,591.79
  5. Step 5: Solve for x
    x = 837,859,591.79/32,957.69
  6. Step 6: Final answer
    x = 25,422.28

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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.