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Finding the Fourth Proportional to 53,455.67, 80,159.80 and 28,491.06

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Solution

The fourth proportional to 53,455.67, 80,159.80 and 28,491.06 is: 42,723.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,455.67 : 80,159.80 = 28,491.06 : x
  2. Step 2: Convert to fraction form
    53,455.67/80,159.80 = 28,491.06/x
  3. Step 3: Cross multiply
    53,455.67x = 80,159.80 × 28,491.06
  4. Step 4: Simplify right side
    53,455.67x = 2,283,837,671.39
  5. Step 5: Solve for x
    x = 2,283,837,671.39/53,455.67
  6. Step 6: Final answer
    x = 42,723.96

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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.