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Finding the Fourth Proportional to 14,264.80, 21,397.92 and 4,905.92

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Solution

The fourth proportional to 14,264.80, 21,397.92 and 4,905.92 is: 7,359.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,264.80 : 21,397.92 = 4,905.92 : x
  2. Step 2: Convert to fraction form
    14,264.80/21,397.92 = 4,905.92/x
  3. Step 3: Cross multiply
    14,264.80x = 21,397.92 × 4,905.92
  4. Step 4: Simplify right side
    14,264.80x = 104,976,483.69
  5. Step 5: Solve for x
    x = 104,976,483.69/14,264.80
  6. Step 6: Final answer
    x = 7,359.13

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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.