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Finding the Fourth Proportional to 58,249, 87,351.30 and 20,802.08

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Solution

The fourth proportional to 58,249, 87,351.30 and 20,802.08 is: 31,195.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,249 : 87,351.30 = 20,802.08 : x
  2. Step 2: Convert to fraction form
    58,249/87,351.30 = 20,802.08/x
  3. Step 3: Cross multiply
    58,249x = 87,351.30 × 20,802.08
  4. Step 4: Simplify right side
    58,249x = 1,817,088,730.70
  5. Step 5: Solve for x
    x = 1,817,088,730.70/58,249
  6. Step 6: Final answer
    x = 31,195.19

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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.