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Finding the Fourth Proportional to 117,977.70, 162,812.10 and 64,265.58

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Solution

The fourth proportional to 117,977.70, 162,812.10 and 64,265.58 is: 88,688.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,977.70 : 162,812.10 = 64,265.58 : x
  2. Step 2: Convert to fraction form
    117,977.70/162,812.10 = 64,265.58/x
  3. Step 3: Cross multiply
    117,977.70x = 162,812.10 × 64,265.58
  4. Step 4: Simplify right side
    117,977.70x = 10,463,214,037.52
  5. Step 5: Solve for x
    x = 10,463,214,037.52/117,977.70
  6. Step 6: Final answer
    x = 88,688.07

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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.