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Finding the Fourth Proportional to 14,655.88, 21,979.18 and 4,792.88

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Solution

The fourth proportional to 14,655.88, 21,979.18 and 4,792.88 is: 7,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,655.88 : 21,979.18 = 4,792.88 : x
  2. Step 2: Convert to fraction form
    14,655.88/21,979.18 = 4,792.88/x
  3. Step 3: Cross multiply
    14,655.88x = 21,979.18 × 4,792.88
  4. Step 4: Simplify right side
    14,655.88x = 105,343,572.24
  5. Step 5: Solve for x
    x = 105,343,572.24/14,655.88
  6. Step 6: Final answer
    x = 7,187.80

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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.