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Finding the Fourth Proportional to 31,554.40, 47,291.40 and 16,770.40

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Solution

The fourth proportional to 31,554.40, 47,291.40 and 16,770.40 is: 25,134.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,554.40 : 47,291.40 = 16,770.40 : x
  2. Step 2: Convert to fraction form
    31,554.40/47,291.40 = 16,770.40/x
  3. Step 3: Cross multiply
    31,554.40x = 47,291.40 × 16,770.40
  4. Step 4: Simplify right side
    31,554.40x = 793,095,694.56
  5. Step 5: Solve for x
    x = 793,095,694.56/31,554.40
  6. Step 6: Final answer
    x = 25,134.23

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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.