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Finding the Fourth Proportional to 43,907.84, 65,868.17 and 14,318.40

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Solution

The fourth proportional to 43,907.84, 65,868.17 and 14,318.40 is: 21,479.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,907.84 : 65,868.17 = 14,318.40 : x
  2. Step 2: Convert to fraction form
    43,907.84/65,868.17 = 14,318.40/x
  3. Step 3: Cross multiply
    43,907.84x = 65,868.17 × 14,318.40
  4. Step 4: Simplify right side
    43,907.84x = 943,126,805.33
  5. Step 5: Solve for x
    x = 943,126,805.33/43,907.84
  6. Step 6: Final answer
    x = 21,479.69

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1.5x scale

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.