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Finding the Fourth Proportional to 117,396.50, 162,006.64 and 63,681.54

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Solution

The fourth proportional to 117,396.50, 162,006.64 and 63,681.54 is: 87,880.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,396.50 : 162,006.64 = 63,681.54 : x
  2. Step 2: Convert to fraction form
    117,396.50/162,006.64 = 63,681.54/x
  3. Step 3: Cross multiply
    117,396.50x = 162,006.64 × 63,681.54
  4. Step 4: Simplify right side
    117,396.50x = 10,316,832,325.43
  5. Step 5: Solve for x
    x = 10,316,832,325.43/117,396.50
  6. Step 6: Final answer
    x = 87,880.24

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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.