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Finding the Fourth Proportional to 55,303.61, 82,955.39 and 13,750.61

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Solution

The fourth proportional to 55,303.61, 82,955.39 and 13,750.61 is: 20,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,303.61 : 82,955.39 = 13,750.61 : x
  2. Step 2: Convert to fraction form
    55,303.61/82,955.39 = 13,750.61/x
  3. Step 3: Cross multiply
    55,303.61x = 82,955.39 × 13,750.61
  4. Step 4: Simplify right side
    55,303.61x = 1,140,686,731.76
  5. Step 5: Solve for x
    x = 1,140,686,731.76/55,303.61
  6. Step 6: Final answer
    x = 20,625.90

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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.