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Finding the Fourth Proportional to 117,497.79, 162,148.64 and 63,782.91

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Solution

The fourth proportional to 117,497.79, 162,148.64 and 63,782.91 is: 88,021.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,497.79 : 162,148.64 = 63,782.91 : x
  2. Step 2: Convert to fraction form
    117,497.79/162,148.64 = 63,782.91/x
  3. Step 3: Cross multiply
    117,497.79x = 162,148.64 × 63,782.91
  4. Step 4: Simplify right side
    117,497.79x = 10,342,311,792.83
  5. Step 5: Solve for x
    x = 10,342,311,792.83/117,497.79
  6. Step 6: Final answer
    x = 88,021.33

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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.