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Finding the Fourth Proportional to 66,248.82, 99,290.88 and 31,114.80

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Solution

The fourth proportional to 66,248.82, 99,290.88 and 31,114.80 is: 46,633.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,248.82 : 99,290.88 = 31,114.80 : x
  2. Step 2: Convert to fraction form
    66,248.82/99,290.88 = 31,114.80/x
  3. Step 3: Cross multiply
    66,248.82x = 99,290.88 × 31,114.80
  4. Step 4: Simplify right side
    66,248.82x = 3,089,415,873.02
  5. Step 5: Solve for x
    x = 3,089,415,873.02/66,248.82
  6. Step 6: Final answer
    x = 46,633.52

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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.