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Finding the Fourth Proportional to 118,302.70, 163,260.20 and 64,589.98

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Solution

The fourth proportional to 118,302.70, 163,260.20 and 64,589.98 is: 89,135.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,302.70 : 163,260.20 = 64,589.98 : x
  2. Step 2: Convert to fraction form
    118,302.70/163,260.20 = 64,589.98/x
  3. Step 3: Cross multiply
    118,302.70x = 163,260.20 × 64,589.98
  4. Step 4: Simplify right side
    118,302.70x = 10,544,971,913.55
  5. Step 5: Solve for x
    x = 10,544,971,913.55/118,302.70
  6. Step 6: Final answer
    x = 89,135.52

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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.