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Finding the Fourth Proportional to 61,646.37, 85,075.82 and 36,143.42

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Solution

The fourth proportional to 61,646.37, 85,075.82 and 36,143.42 is: 49,880.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,646.37 : 85,075.82 = 36,143.42 : x
  2. Step 2: Convert to fraction form
    61,646.37/85,075.82 = 36,143.42/x
  3. Step 3: Cross multiply
    61,646.37x = 85,075.82 × 36,143.42
  4. Step 4: Simplify right side
    61,646.37x = 3,074,930,623.55
  5. Step 5: Solve for x
    x = 3,074,930,623.55/61,646.37
  6. Step 6: Final answer
    x = 49,880.16

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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.