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Finding the Fourth Proportional to 201,973.90, 278,711.29 and 111,324.88

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Solution

The fourth proportional to 201,973.90, 278,711.29 and 111,324.88 is: 153,621.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,973.90 : 278,711.29 = 111,324.88 : x
  2. Step 2: Convert to fraction form
    201,973.90/278,711.29 = 111,324.88/x
  3. Step 3: Cross multiply
    201,973.90x = 278,711.29 × 111,324.88
  4. Step 4: Simplify right side
    201,973.90x = 31,027,500,913.90
  5. Step 5: Solve for x
    x = 31,027,500,913.90/201,973.90
  6. Step 6: Final answer
    x = 153,621.34

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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.