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Finding the Fourth Proportional to 117,893.60, 162,688.19 and 64,177.50

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Solution

The fourth proportional to 117,893.60, 162,688.19 and 64,177.50 is: 88,562.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,893.60 : 162,688.19 = 64,177.50 : x
  2. Step 2: Convert to fraction form
    117,893.60/162,688.19 = 64,177.50/x
  3. Step 3: Cross multiply
    117,893.60x = 162,688.19 × 64,177.50
  4. Step 4: Simplify right side
    117,893.60x = 10,440,921,313.73
  5. Step 5: Solve for x
    x = 10,440,921,313.73/117,893.60
  6. Step 6: Final answer
    x = 88,562.24

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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.