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Finding the Fourth Proportional to 38,563.65, 53,225.15 and 21,796.65

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Solution

The fourth proportional to 38,563.65, 53,225.15 and 21,796.65 is: 30,083.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,563.65 : 53,225.15 = 21,796.65 : x
  2. Step 2: Convert to fraction form
    38,563.65/53,225.15 = 21,796.65/x
  3. Step 3: Cross multiply
    38,563.65x = 53,225.15 × 21,796.65
  4. Step 4: Simplify right side
    38,563.65x = 1,160,129,856.76
  5. Step 5: Solve for x
    x = 1,160,129,856.76/38,563.65
  6. Step 6: Final answer
    x = 30,083.51

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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.