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Finding the Fourth Proportional to 13,471.19, 20,210.98 and 6,901.99

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Solution

The fourth proportional to 13,471.19, 20,210.98 and 6,901.99 is: 10,355.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,471.19 : 20,210.98 = 6,901.99 : x
  2. Step 2: Convert to fraction form
    13,471.19/20,210.98 = 6,901.99/x
  3. Step 3: Cross multiply
    13,471.19x = 20,210.98 × 6,901.99
  4. Step 4: Simplify right side
    13,471.19x = 139,495,981.85
  5. Step 5: Solve for x
    x = 139,495,981.85/13,471.19
  6. Step 6: Final answer
    x = 10,355.13

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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.