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Finding the Fourth Proportional to 117,920.61, 162,733.36 and 64,208.57

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Solution

The fourth proportional to 117,920.61, 162,733.36 and 64,208.57 is: 88,609.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,920.61 : 162,733.36 = 64,208.57 : x
  2. Step 2: Convert to fraction form
    117,920.61/162,733.36 = 64,208.57/x
  3. Step 3: Cross multiply
    117,920.61x = 162,733.36 × 64,208.57
  4. Step 4: Simplify right side
    117,920.61x = 10,448,876,336.90
  5. Step 5: Solve for x
    x = 10,448,876,336.90/117,920.61
  6. Step 6: Final answer
    x = 88,609.42

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1.5x scale

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.