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Finding the Fourth Proportional to 38,593.50, 53,259.03 and 20,929.50

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Solution

The fourth proportional to 38,593.50, 53,259.03 and 20,929.50 is: 28,882.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,593.50 : 53,259.03 = 20,929.50 : x
  2. Step 2: Convert to fraction form
    38,593.50/53,259.03 = 20,929.50/x
  3. Step 3: Cross multiply
    38,593.50x = 53,259.03 × 20,929.50
  4. Step 4: Simplify right side
    38,593.50x = 1,114,684,868.39
  5. Step 5: Solve for x
    x = 1,114,684,868.39/38,593.50
  6. Step 6: Final answer
    x = 28,882.71

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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.