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Finding the Fourth Proportional to 58,300.66, 87,463.74 and 18,861.76

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Solution

The fourth proportional to 58,300.66, 87,463.74 and 18,861.76 is: 28,296.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,300.66 : 87,463.74 = 18,861.76 : x
  2. Step 2: Convert to fraction form
    58,300.66/87,463.74 = 18,861.76/x
  3. Step 3: Cross multiply
    58,300.66x = 87,463.74 × 18,861.76
  4. Step 4: Simplify right side
    58,300.66x = 1,649,719,635.26
  5. Step 5: Solve for x
    x = 1,649,719,635.26/58,300.66
  6. Step 6: Final answer
    x = 28,296.76

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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.