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Finding the Fourth Proportional to 61,474.80, 92,212.20 and 40,698.30

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Solution

The fourth proportional to 61,474.80, 92,212.20 and 40,698.30 is: 61,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,474.80 : 92,212.20 = 40,698.30 : x
  2. Step 2: Convert to fraction form
    61,474.80/92,212.20 = 40,698.30/x
  3. Step 3: Cross multiply
    61,474.80x = 92,212.20 × 40,698.30
  4. Step 4: Simplify right side
    61,474.80x = 3,752,879,779.26
  5. Step 5: Solve for x
    x = 3,752,879,779.26/61,474.80
  6. Step 6: Final answer
    x = 61,047.45

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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.