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Finding the Fourth Proportional to 58,488.69, 87,739.18 and 19,048.88

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Solution

The fourth proportional to 58,488.69, 87,739.18 and 19,048.88 is: 28,575.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,488.69 : 87,739.18 = 19,048.88 : x
  2. Step 2: Convert to fraction form
    58,488.69/87,739.18 = 19,048.88/x
  3. Step 3: Cross multiply
    58,488.69x = 87,739.18 × 19,048.88
  4. Step 4: Simplify right side
    58,488.69x = 1,671,332,896.46
  5. Step 5: Solve for x
    x = 1,671,332,896.46/58,488.69
  6. Step 6: Final answer
    x = 28,575.32

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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.