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Finding the Fourth Proportional to 201,957.55, 278,717.45 and 111,329.64

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Solution

The fourth proportional to 201,957.55, 278,717.45 and 111,329.64 is: 153,643.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,957.55 : 278,717.45 = 111,329.64 : x
  2. Step 2: Convert to fraction form
    201,957.55/278,717.45 = 111,329.64/x
  3. Step 3: Cross multiply
    201,957.55x = 278,717.45 × 111,329.64
  4. Step 4: Simplify right side
    201,957.55x = 31,029,512,813.57
  5. Step 5: Solve for x
    x = 31,029,512,813.57/201,957.55
  6. Step 6: Final answer
    x = 153,643.74

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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.