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Finding the Fourth Proportional to 118,635, 163,715.07 and 67,656.03

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Solution

The fourth proportional to 118,635, 163,715.07 and 67,656.03 is: 93,364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,635 : 163,715.07 = 67,656.03 : x
  2. Step 2: Convert to fraction form
    118,635/163,715.07 = 67,656.03/x
  3. Step 3: Cross multiply
    118,635x = 163,715.07 × 67,656.03
  4. Step 4: Simplify right side
    118,635x = 11,076,311,687.37
  5. Step 5: Solve for x
    x = 11,076,311,687.37/118,635
  6. Step 6: Final answer
    x = 93,364.62

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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.