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Finding the Fourth Proportional to 118,300.44, 163,254.92 and 64,585.90

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Solution

The fourth proportional to 118,300.44, 163,254.92 and 64,585.90 is: 89,128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,300.44 : 163,254.92 = 64,585.90 : x
  2. Step 2: Convert to fraction form
    118,300.44/163,254.92 = 64,585.90/x
  3. Step 3: Cross multiply
    118,300.44x = 163,254.92 × 64,585.90
  4. Step 4: Simplify right side
    118,300.44x = 10,543,965,206.56
  5. Step 5: Solve for x
    x = 10,543,965,206.56/118,300.44
  6. Step 6: Final answer
    x = 89,128.71

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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.