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Finding the Fourth Proportional to 118,508, 163,541.09 and 64,793.46

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Solution

The fourth proportional to 118,508, 163,541.09 and 64,793.46 is: 89,415.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,508 : 163,541.09 = 64,793.46 : x
  2. Step 2: Convert to fraction form
    118,508/163,541.09 = 64,793.46/x
  3. Step 3: Cross multiply
    118,508x = 163,541.09 × 64,793.46
  4. Step 4: Simplify right side
    118,508x = 10,596,393,073.27
  5. Step 5: Solve for x
    x = 10,596,393,073.27/118,508
  6. Step 6: Final answer
    x = 89,415.00

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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.