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Finding the Fourth Proportional to 52,719.59, 79,028.58 and 19,421.46

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Solution

The fourth proportional to 52,719.59, 79,028.58 and 19,421.46 is: 29,113.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,719.59 : 79,028.58 = 19,421.46 : x
  2. Step 2: Convert to fraction form
    52,719.59/79,028.58 = 19,421.46/x
  3. Step 3: Cross multiply
    52,719.59x = 79,028.58 × 19,421.46
  4. Step 4: Simplify right side
    52,719.59x = 1,534,850,405.33
  5. Step 5: Solve for x
    x = 1,534,850,405.33/52,719.59
  6. Step 6: Final answer
    x = 29,113.48

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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.