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Finding the Fourth Proportional to 38,891.48, 53,662.70 and 22,978.62

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Solution

The fourth proportional to 38,891.48, 53,662.70 and 22,978.62 is: 31,706.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,891.48 : 53,662.70 = 22,978.62 : x
  2. Step 2: Convert to fraction form
    38,891.48/53,662.70 = 22,978.62/x
  3. Step 3: Cross multiply
    38,891.48x = 53,662.70 × 22,978.62
  4. Step 4: Simplify right side
    38,891.48x = 1,233,094,848.92
  5. Step 5: Solve for x
    x = 1,233,094,848.92/38,891.48
  6. Step 6: Final answer
    x = 31,706.04

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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.