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Finding the Fourth Proportional to 201,937.70, 278,672.72 and 111,293.76

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Solution

The fourth proportional to 201,937.70, 278,672.72 and 111,293.76 is: 153,584.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,937.70 : 278,672.72 = 111,293.76 : x
  2. Step 2: Convert to fraction form
    201,937.70/278,672.72 = 111,293.76/x
  3. Step 3: Cross multiply
    201,937.70x = 278,672.72 × 111,293.76
  4. Step 4: Simplify right side
    201,937.70x = 31,014,534,818.23
  5. Step 5: Solve for x
    x = 31,014,534,818.23/201,937.70
  6. Step 6: Final answer
    x = 153,584.67

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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.