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Finding the Fourth Proportional to 118,555.68, 163,604.54 and 64,840.52

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Solution

The fourth proportional to 118,555.68, 163,604.54 and 64,840.52 is: 89,478.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,555.68 : 163,604.54 = 64,840.52 : x
  2. Step 2: Convert to fraction form
    118,555.68/163,604.54 = 64,840.52/x
  3. Step 3: Cross multiply
    118,555.68x = 163,604.54 × 64,840.52
  4. Step 4: Simplify right side
    118,555.68x = 10,608,203,447.96
  5. Step 5: Solve for x
    x = 10,608,203,447.96/118,555.68
  6. Step 6: Final answer
    x = 89,478.66

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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.