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Finding the Fourth Proportional to 61,475.80, 92,213.70 and 55,643.80

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Solution

The fourth proportional to 61,475.80, 92,213.70 and 55,643.80 is: 83,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,475.80 : 92,213.70 = 55,643.80 : x
  2. Step 2: Convert to fraction form
    61,475.80/92,213.70 = 55,643.80/x
  3. Step 3: Cross multiply
    61,475.80x = 92,213.70 × 55,643.80
  4. Step 4: Simplify right side
    61,475.80x = 5,131,120,680.06
  5. Step 5: Solve for x
    x = 5,131,120,680.06/61,475.80
  6. Step 6: Final answer
    x = 83,465.70

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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.