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Finding the Fourth Proportional to 140,693.50, 211,040.25 and 42,197.50

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Solution

The fourth proportional to 140,693.50, 211,040.25 and 42,197.50 is: 63,296.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,693.50 : 211,040.25 = 42,197.50 : x
  2. Step 2: Convert to fraction form
    140,693.50/211,040.25 = 42,197.50/x
  3. Step 3: Cross multiply
    140,693.50x = 211,040.25 × 42,197.50
  4. Step 4: Simplify right side
    140,693.50x = 8,905,370,949.38
  5. Step 5: Solve for x
    x = 8,905,370,949.38/140,693.50
  6. Step 6: Final answer
    x = 63,296.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.