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Finding the Fourth Proportional to 38,820.96, 53,572.64 and 22,053.96

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Solution

The fourth proportional to 38,820.96, 53,572.64 and 22,053.96 is: 30,434.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,820.96 : 53,572.64 = 22,053.96 : x
  2. Step 2: Convert to fraction form
    38,820.96/53,572.64 = 22,053.96/x
  3. Step 3: Cross multiply
    38,820.96x = 53,572.64 × 22,053.96
  4. Step 4: Simplify right side
    38,820.96x = 1,181,488,749.38
  5. Step 5: Solve for x
    x = 1,181,488,749.38/38,820.96
  6. Step 6: Final answer
    x = 30,434.30

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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.