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Finding the Fourth Proportional to 118,338.81, 163,322.99 and 67,341.61

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Solution

The fourth proportional to 118,338.81, 163,322.99 and 67,341.61 is: 92,940.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,338.81 : 163,322.99 = 67,341.61 : x
  2. Step 2: Convert to fraction form
    118,338.81/163,322.99 = 67,341.61/x
  3. Step 3: Cross multiply
    118,338.81x = 163,322.99 × 67,341.61
  4. Step 4: Simplify right side
    118,338.81x = 10,998,433,216.59
  5. Step 5: Solve for x
    x = 10,998,433,216.59/118,338.81
  6. Step 6: Final answer
    x = 92,940.21

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1.5x scale

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.