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Finding the Fourth Proportional to 43,901.03, 65,866.33 and 13,920.16

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Solution

The fourth proportional to 43,901.03, 65,866.33 and 13,920.16 is: 20,884.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,901.03 : 65,866.33 = 13,920.16 : x
  2. Step 2: Convert to fraction form
    43,901.03/65,866.33 = 13,920.16/x
  3. Step 3: Cross multiply
    43,901.03x = 65,866.33 × 13,920.16
  4. Step 4: Simplify right side
    43,901.03x = 916,869,852.21
  5. Step 5: Solve for x
    x = 916,869,852.21/43,901.03
  6. Step 6: Final answer
    x = 20,884.93

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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.