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Finding the Fourth Proportional to 14,343.99, 21,510.66 and 4,981.50

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Solution

The fourth proportional to 14,343.99, 21,510.66 and 4,981.50 is: 7,470.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,343.99 : 21,510.66 = 4,981.50 : x
  2. Step 2: Convert to fraction form
    14,343.99/21,510.66 = 4,981.50/x
  3. Step 3: Cross multiply
    14,343.99x = 21,510.66 × 4,981.50
  4. Step 4: Simplify right side
    14,343.99x = 107,155,371.47
  5. Step 5: Solve for x
    x = 107,155,371.47/14,343.99
  6. Step 6: Final answer
    x = 7,470.40

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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.