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Finding the Fourth Proportional to 14,029.57, 21,045.28 and 4,669.21

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Solution

The fourth proportional to 14,029.57, 21,045.28 and 4,669.21 is: 7,004.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,029.57 : 21,045.28 = 4,669.21 : x
  2. Step 2: Convert to fraction form
    14,029.57/21,045.28 = 4,669.21/x
  3. Step 3: Cross multiply
    14,029.57x = 21,045.28 × 4,669.21
  4. Step 4: Simplify right side
    14,029.57x = 98,264,831.83
  5. Step 5: Solve for x
    x = 98,264,831.83/14,029.57
  6. Step 6: Final answer
    x = 7,004.12

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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.