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Finding the Fourth Proportional to 118,095.91, 162,960.54 and 66,407.53

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Solution

The fourth proportional to 118,095.91, 162,960.54 and 66,407.53 is: 91,635.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,095.91 : 162,960.54 = 66,407.53 : x
  2. Step 2: Convert to fraction form
    118,095.91/162,960.54 = 66,407.53/x
  3. Step 3: Cross multiply
    118,095.91x = 162,960.54 × 66,407.53
  4. Step 4: Simplify right side
    118,095.91x = 10,821,806,948.87
  5. Step 5: Solve for x
    x = 10,821,806,948.87/118,095.91
  6. Step 6: Final answer
    x = 91,635.75

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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.