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Finding the Fourth Proportional to 35,409.80, 53,129.10 and 14,635.40

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Solution

The fourth proportional to 35,409.80, 53,129.10 and 14,635.40 is: 21,959.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,409.80 : 53,129.10 = 14,635.40 : x
  2. Step 2: Convert to fraction form
    35,409.80/53,129.10 = 14,635.40/x
  3. Step 3: Cross multiply
    35,409.80x = 53,129.10 × 14,635.40
  4. Step 4: Simplify right side
    35,409.80x = 777,565,630.14
  5. Step 5: Solve for x
    x = 777,565,630.14/35,409.80
  6. Step 6: Final answer
    x = 21,959.05

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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.