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Finding the Fourth Proportional to 58,320.70, 87,471.66 and 20,873.80

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Solution

The fourth proportional to 58,320.70, 87,471.66 and 20,873.80 is: 31,307.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,320.70 : 87,471.66 = 20,873.80 : x
  2. Step 2: Convert to fraction form
    58,320.70/87,471.66 = 20,873.80/x
  3. Step 3: Cross multiply
    58,320.70x = 87,471.66 × 20,873.80
  4. Step 4: Simplify right side
    58,320.70x = 1,825,865,936.51
  5. Step 5: Solve for x
    x = 1,825,865,936.51/58,320.70
  6. Step 6: Final answer
    x = 31,307.34

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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.