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Finding the Fourth Proportional to 117,656.51, 162,365.49 and 66,678.95

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Solution

The fourth proportional to 117,656.51, 162,365.49 and 66,678.95 is: 92,016.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,656.51 : 162,365.49 = 66,678.95 : x
  2. Step 2: Convert to fraction form
    117,656.51/162,365.49 = 66,678.95/x
  3. Step 3: Cross multiply
    117,656.51x = 162,365.49 × 66,678.95
  4. Step 4: Simplify right side
    117,656.51x = 10,826,360,795.35
  5. Step 5: Solve for x
    x = 10,826,360,795.35/117,656.51
  6. Step 6: Final answer
    x = 92,016.68

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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.