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Finding the Fourth Proportional to 58,873.70, 88,318.74 and 21,426.80

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Solution

The fourth proportional to 58,873.70, 88,318.74 and 21,426.80 is: 32,143.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,873.70 : 88,318.74 = 21,426.80 : x
  2. Step 2: Convert to fraction form
    58,873.70/88,318.74 = 21,426.80/x
  3. Step 3: Cross multiply
    58,873.70x = 88,318.74 × 21,426.80
  4. Step 4: Simplify right side
    58,873.70x = 1,892,387,978.23
  5. Step 5: Solve for x
    x = 1,892,387,978.23/58,873.70
  6. Step 6: Final answer
    x = 32,143.18

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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.