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Finding the Fourth Proportional to 38,892.15, 53,668.98 and 22,978.08

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Solution

The fourth proportional to 38,892.15, 53,668.98 and 22,978.08 is: 31,708.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,892.15 : 53,668.98 = 22,978.08 : x
  2. Step 2: Convert to fraction form
    38,892.15/53,668.98 = 22,978.08/x
  3. Step 3: Cross multiply
    38,892.15x = 53,668.98 × 22,978.08
  4. Step 4: Simplify right side
    38,892.15x = 1,233,210,115.96
  5. Step 5: Solve for x
    x = 1,233,210,115.96/38,892.15
  6. Step 6: Final answer
    x = 31,708.46

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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.