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Finding the Fourth Proportional to 58,647.28, 87,969.69 and 14,274.28

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Solution

The fourth proportional to 58,647.28, 87,969.69 and 14,274.28 is: 21,411.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,647.28 : 87,969.69 = 14,274.28 : x
  2. Step 2: Convert to fraction form
    58,647.28/87,969.69 = 14,274.28/x
  3. Step 3: Cross multiply
    58,647.28x = 87,969.69 × 14,274.28
  4. Step 4: Simplify right side
    58,647.28x = 1,255,703,986.57
  5. Step 5: Solve for x
    x = 1,255,703,986.57/58,647.28
  6. Step 6: Final answer
    x = 21,411.12

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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.