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Finding the Fourth Proportional to 53,291.22, 79,848.60 and 47,796.90

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Solution

The fourth proportional to 53,291.22, 79,848.60 and 47,796.90 is: 71,616.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,291.22 : 79,848.60 = 47,796.90 : x
  2. Step 2: Convert to fraction form
    53,291.22/79,848.60 = 47,796.90/x
  3. Step 3: Cross multiply
    53,291.22x = 79,848.60 × 47,796.90
  4. Step 4: Simplify right side
    53,291.22x = 3,816,515,549.34
  5. Step 5: Solve for x
    x = 3,816,515,549.34/53,291.22
  6. Step 6: Final answer
    x = 71,616.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.