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Finding the Fourth Proportional to 58,639.92, 87,995.88 and 48,899.76

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Solution

The fourth proportional to 58,639.92, 87,995.88 and 48,899.76 is: 73,379.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,639.92 : 87,995.88 = 48,899.76 : x
  2. Step 2: Convert to fraction form
    58,639.92/87,995.88 = 48,899.76/x
  3. Step 3: Cross multiply
    58,639.92x = 87,995.88 × 48,899.76
  4. Step 4: Simplify right side
    58,639.92x = 4,302,977,412.99
  5. Step 5: Solve for x
    x = 4,302,977,412.99/58,639.92
  6. Step 6: Final answer
    x = 73,379.66

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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.