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Finding the Fourth Proportional to 29,070.87, 43,610.88 and 12,431.00

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Solution

The fourth proportional to 29,070.87, 43,610.88 and 12,431.00 is: 18,648.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,070.87 : 43,610.88 = 12,431.00 : x
  2. Step 2: Convert to fraction form
    29,070.87/43,610.88 = 12,431.00/x
  3. Step 3: Cross multiply
    29,070.87x = 43,610.88 × 12,431.00
  4. Step 4: Simplify right side
    29,070.87x = 542,126,631.23
  5. Step 5: Solve for x
    x = 542,126,631.23/29,070.87
  6. Step 6: Final answer
    x = 18,648.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.