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Finding the Fourth Proportional to 118,366.90, 163,345.24 and 64,651.90

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Solution

The fourth proportional to 118,366.90, 163,345.24 and 64,651.90 is: 89,219.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,366.90 : 163,345.24 = 64,651.90 : x
  2. Step 2: Convert to fraction form
    118,366.90/163,345.24 = 64,651.90/x
  3. Step 3: Cross multiply
    118,366.90x = 163,345.24 × 64,651.90
  4. Step 4: Simplify right side
    118,366.90x = 10,560,580,121.96
  5. Step 5: Solve for x
    x = 10,560,580,121.96/118,366.90
  6. Step 6: Final answer
    x = 89,219.03

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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.