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Finding the Fourth Proportional to 58,719.80, 88,086.90 and 19,266.20

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Solution

The fourth proportional to 58,719.80, 88,086.90 and 19,266.20 is: 28,901.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,719.80 : 88,086.90 = 19,266.20 : x
  2. Step 2: Convert to fraction form
    58,719.80/88,086.90 = 19,266.20/x
  3. Step 3: Cross multiply
    58,719.80x = 88,086.90 × 19,266.20
  4. Step 4: Simplify right side
    58,719.80x = 1,697,099,832.78
  5. Step 5: Solve for x
    x = 1,697,099,832.78/58,719.80
  6. Step 6: Final answer
    x = 28,901.66

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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.