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Finding the Fourth Proportional to 117,770.52, 162,548.44 and 72,448.58

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Solution

The fourth proportional to 117,770.52, 162,548.44 and 72,448.58 is: 99,994.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,770.52 : 162,548.44 = 72,448.58 : x
  2. Step 2: Convert to fraction form
    117,770.52/162,548.44 = 72,448.58/x
  3. Step 3: Cross multiply
    117,770.52x = 162,548.44 × 72,448.58
  4. Step 4: Simplify right side
    117,770.52x = 11,776,403,659.22
  5. Step 5: Solve for x
    x = 11,776,403,659.22/117,770.52
  6. Step 6: Final answer
    x = 99,994.49

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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.