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Finding the Fourth Proportional to 140,668.83, 211,003.29 and 61,783.74

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Solution

The fourth proportional to 140,668.83, 211,003.29 and 61,783.74 is: 92,675.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,668.83 : 211,003.29 = 61,783.74 : x
  2. Step 2: Convert to fraction form
    140,668.83/211,003.29 = 61,783.74/x
  3. Step 3: Cross multiply
    140,668.83x = 211,003.29 × 61,783.74
  4. Step 4: Simplify right side
    140,668.83x = 13,036,572,408.50
  5. Step 5: Solve for x
    x = 13,036,572,408.50/140,668.83
  6. Step 6: Final answer
    x = 92,675.63

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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.