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Finding the Fourth Proportional to 118,295.53, 163,250.30 and 64,582.81

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Solution

The fourth proportional to 118,295.53, 163,250.30 and 64,582.81 is: 89,125.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,295.53 : 163,250.30 = 64,582.81 : x
  2. Step 2: Convert to fraction form
    118,295.53/163,250.30 = 64,582.81/x
  3. Step 3: Cross multiply
    118,295.53x = 163,250.30 × 64,582.81
  4. Step 4: Simplify right side
    118,295.53x = 10,543,163,107.34
  5. Step 5: Solve for x
    x = 10,543,163,107.34/118,295.53
  6. Step 6: Final answer
    x = 89,125.63

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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.