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Finding the Fourth Proportional to 13,373.94, 20,063.95 and 7,130.66

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Solution

The fourth proportional to 13,373.94, 20,063.95 and 7,130.66 is: 10,697.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,373.94 : 20,063.95 = 7,130.66 : x
  2. Step 2: Convert to fraction form
    13,373.94/20,063.95 = 7,130.66/x
  3. Step 3: Cross multiply
    13,373.94x = 20,063.95 × 7,130.66
  4. Step 4: Simplify right side
    13,373.94x = 143,069,184.10
  5. Step 5: Solve for x
    x = 143,069,184.10/13,373.94
  6. Step 6: Final answer
    x = 10,697.61

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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.