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Finding the Fourth Proportional to 28,047.70, 38,706.72 and 16,113.46

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Solution

The fourth proportional to 28,047.70, 38,706.72 and 16,113.46 is: 22,237.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,047.70 : 38,706.72 = 16,113.46 : x
  2. Step 2: Convert to fraction form
    28,047.70/38,706.72 = 16,113.46/x
  3. Step 3: Cross multiply
    28,047.70x = 38,706.72 × 16,113.46
  4. Step 4: Simplify right side
    28,047.70x = 623,699,184.45
  5. Step 5: Solve for x
    x = 623,699,184.45/28,047.70
  6. Step 6: Final answer
    x = 22,237.09

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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.