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Finding the Fourth Proportional to 118,193.61, 163,111.29 and 64,481.58

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Solution

The fourth proportional to 118,193.61, 163,111.29 and 64,481.58 is: 88,986.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,193.61 : 163,111.29 = 64,481.58 : x
  2. Step 2: Convert to fraction form
    118,193.61/163,111.29 = 64,481.58/x
  3. Step 3: Cross multiply
    118,193.61x = 163,111.29 × 64,481.58
  4. Step 4: Simplify right side
    118,193.61x = 10,517,673,695.04
  5. Step 5: Solve for x
    x = 10,517,673,695.04/118,193.61
  6. Step 6: Final answer
    x = 88,986.82

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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.