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Finding the Fourth Proportional to 141,769, 212,692.91 and 61,813.96

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Solution

The fourth proportional to 141,769, 212,692.91 and 61,813.96 is: 92,738.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,769 : 212,692.91 = 61,813.96 : x
  2. Step 2: Convert to fraction form
    141,769/212,692.91 = 61,813.96/x
  3. Step 3: Cross multiply
    141,769x = 212,692.91 × 61,813.96
  4. Step 4: Simplify right side
    141,769x = 13,147,391,031.02
  5. Step 5: Solve for x
    x = 13,147,391,031.02/141,769
  6. Step 6: Final answer
    x = 92,738.12

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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.