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Finding the Fourth Proportional to 58,812.81, 88,219.21 and 21,365.90

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Solution

The fourth proportional to 58,812.81, 88,219.21 and 21,365.90 is: 32,048.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,812.81 : 88,219.21 = 21,365.90 : x
  2. Step 2: Convert to fraction form
    58,812.81/88,219.21 = 21,365.90/x
  3. Step 3: Cross multiply
    58,812.81x = 88,219.21 × 21,365.90
  4. Step 4: Simplify right side
    58,812.81x = 1,884,882,818.94
  5. Step 5: Solve for x
    x = 1,884,882,818.94/58,812.81
  6. Step 6: Final answer
    x = 32,048.85

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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.