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Finding the Fourth Proportional to 20,546.70, 28,823.70 and 20,546.70

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Solution

The fourth proportional to 20,546.70, 28,823.70 and 20,546.70 is: 28,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,546.70 : 28,823.70 = 20,546.70 : x
  2. Step 2: Convert to fraction form
    20,546.70/28,823.70 = 20,546.70/x
  3. Step 3: Cross multiply
    20,546.70x = 28,823.70 × 20,546.70
  4. Step 4: Simplify right side
    20,546.70x = 592,231,916.79
  5. Step 5: Solve for x
    x = 592,231,916.79/20,546.70
  6. Step 6: Final answer
    x = 28,823.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.