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Finding the Fourth Proportional to 36,987.48, 51,042.74 and 20,220.48

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Solution

The fourth proportional to 36,987.48, 51,042.74 and 20,220.48 is: 27,904.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,987.48 : 51,042.74 = 20,220.48 : x
  2. Step 2: Convert to fraction form
    36,987.48/51,042.74 = 20,220.48/x
  3. Step 3: Cross multiply
    36,987.48x = 51,042.74 × 20,220.48
  4. Step 4: Simplify right side
    36,987.48x = 1,032,108,602.21
  5. Step 5: Solve for x
    x = 1,032,108,602.21/36,987.48
  6. Step 6: Final answer
    x = 27,904.27

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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.