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Finding the Fourth Proportional to 117,918.50, 162,726.48 and 64,203.38

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Solution

The fourth proportional to 117,918.50, 162,726.48 and 64,203.38 is: 88,600.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,918.50 : 162,726.48 = 64,203.38 : x
  2. Step 2: Convert to fraction form
    117,918.50/162,726.48 = 64,203.38/x
  3. Step 3: Cross multiply
    117,918.50x = 162,726.48 × 64,203.38
  4. Step 4: Simplify right side
    117,918.50x = 10,447,590,031.50
  5. Step 5: Solve for x
    x = 10,447,590,031.50/117,918.50
  6. Step 6: Final answer
    x = 88,600.09

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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.