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Finding the Fourth Proportional to 43,030.70, 64,546.12 and 13,448.70

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Solution

The fourth proportional to 43,030.70, 64,546.12 and 13,448.70 is: 20,173.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,030.70 : 64,546.12 = 13,448.70 : x
  2. Step 2: Convert to fraction form
    43,030.70/64,546.12 = 13,448.70/x
  3. Step 3: Cross multiply
    43,030.70x = 64,546.12 × 13,448.70
  4. Step 4: Simplify right side
    43,030.70x = 868,061,404.04
  5. Step 5: Solve for x
    x = 868,061,404.04/43,030.70
  6. Step 6: Final answer
    x = 20,173.07

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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.