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Finding the Fourth Proportional to 117,473.86, 162,111.58 and 66,485.67

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Solution

The fourth proportional to 117,473.86, 162,111.58 and 66,485.67 is: 91,748.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,473.86 : 162,111.58 = 66,485.67 : x
  2. Step 2: Convert to fraction form
    117,473.86/162,111.58 = 66,485.67/x
  3. Step 3: Cross multiply
    117,473.86x = 162,111.58 × 66,485.67
  4. Step 4: Simplify right side
    117,473.86x = 10,778,097,011.06
  5. Step 5: Solve for x
    x = 10,778,097,011.06/117,473.86
  6. Step 6: Final answer
    x = 91,748.90

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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.