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Finding the Fourth Proportional to 58,632.30, 87,957.79 and 21,188.58

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Solution

The fourth proportional to 58,632.30, 87,957.79 and 21,188.58 is: 31,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,632.30 : 87,957.79 = 21,188.58 : x
  2. Step 2: Convert to fraction form
    58,632.30/87,957.79 = 21,188.58/x
  3. Step 3: Cross multiply
    58,632.30x = 87,957.79 × 21,188.58
  4. Step 4: Simplify right side
    58,632.30x = 1,863,700,670.04
  5. Step 5: Solve for x
    x = 1,863,700,670.04/58,632.30
  6. Step 6: Final answer
    x = 31,786.25

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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.