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Finding the Fourth Proportional to 52,719.72, 79,070.72 and 23,129.60

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Solution

The fourth proportional to 52,719.72, 79,070.72 and 23,129.60 is: 34,690.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,719.72 : 79,070.72 = 23,129.60 : x
  2. Step 2: Convert to fraction form
    52,719.72/79,070.72 = 23,129.60/x
  3. Step 3: Cross multiply
    52,719.72x = 79,070.72 × 23,129.60
  4. Step 4: Simplify right side
    52,719.72x = 1,828,874,125.31
  5. Step 5: Solve for x
    x = 1,828,874,125.31/52,719.72
  6. Step 6: Final answer
    x = 34,690.51

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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.