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Finding the Fourth Proportional to 14,784, 22,185.72 and 5,550

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Solution

The fourth proportional to 14,784, 22,185.72 and 5,550 is: 8,328.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,784 : 22,185.72 = 5,550 : x
  2. Step 2: Convert to fraction form
    14,784/22,185.72 = 5,550/x
  3. Step 3: Cross multiply
    14,784x = 22,185.72 × 5,550
  4. Step 4: Simplify right side
    14,784x = 123,130,746
  5. Step 5: Solve for x
    x = 123,130,746/14,784
  6. Step 6: Final answer
    x = 8,328.65

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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.