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Finding the Fourth Proportional to 66,698.75, 92,075.29 and 39,466.27

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Solution

The fourth proportional to 66,698.75, 92,075.29 and 39,466.27 is: 54,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,698.75 : 92,075.29 = 39,466.27 : x
  2. Step 2: Convert to fraction form
    66,698.75/92,075.29 = 39,466.27/x
  3. Step 3: Cross multiply
    66,698.75x = 92,075.29 × 39,466.27
  4. Step 4: Simplify right side
    66,698.75x = 3,633,867,926.61
  5. Step 5: Solve for x
    x = 3,633,867,926.61/66,698.75
  6. Step 6: Final answer
    x = 54,481.80

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1.5x scale

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.