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Finding the Fourth Proportional to 14,990.76, 22,486.50 and 5,129.97

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Solution

The fourth proportional to 14,990.76, 22,486.50 and 5,129.97 is: 7,695.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.76 : 22,486.50 = 5,129.97 : x
  2. Step 2: Convert to fraction form
    14,990.76/22,486.50 = 5,129.97/x
  3. Step 3: Cross multiply
    14,990.76x = 22,486.50 × 5,129.97
  4. Step 4: Simplify right side
    14,990.76x = 115,355,070.41
  5. Step 5: Solve for x
    x = 115,355,070.41/14,990.76
  6. Step 6: Final answer
    x = 7,695.08

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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.