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Finding the Fourth Proportional to 28,164.70, 38,870.76 and 16,068.16

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Solution

The fourth proportional to 28,164.70, 38,870.76 and 16,068.16 is: 22,176.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.70 : 38,870.76 = 16,068.16 : x
  2. Step 2: Convert to fraction form
    28,164.70/38,870.76 = 16,068.16/x
  3. Step 3: Cross multiply
    28,164.70x = 38,870.76 × 16,068.16
  4. Step 4: Simplify right side
    28,164.70x = 624,581,591.00
  5. Step 5: Solve for x
    x = 624,581,591.00/28,164.70
  6. Step 6: Final answer
    x = 22,176.04

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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.