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Finding the Fourth Proportional to 117,745.83, 162,490.88 and 64,031.68

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Solution

The fourth proportional to 117,745.83, 162,490.88 and 64,031.68 is: 88,364.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,745.83 : 162,490.88 = 64,031.68 : x
  2. Step 2: Convert to fraction form
    117,745.83/162,490.88 = 64,031.68/x
  3. Step 3: Cross multiply
    117,745.83x = 162,490.88 × 64,031.68
  4. Step 4: Simplify right side
    117,745.83x = 10,404,564,031.08
  5. Step 5: Solve for x
    x = 10,404,564,031.08/117,745.83
  6. Step 6: Final answer
    x = 88,364.61

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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.