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Finding the Fourth Proportional to 53,137.60, 79,699.70 and 15,696.96

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Solution

The fourth proportional to 53,137.60, 79,699.70 and 15,696.96 is: 23,543.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,137.60 : 79,699.70 = 15,696.96 : x
  2. Step 2: Convert to fraction form
    53,137.60/79,699.70 = 15,696.96/x
  3. Step 3: Cross multiply
    53,137.60x = 79,699.70 × 15,696.96
  4. Step 4: Simplify right side
    53,137.60x = 1,251,043,002.91
  5. Step 5: Solve for x
    x = 1,251,043,002.91/53,137.60
  6. Step 6: Final answer
    x = 23,543.46

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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.