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Finding the Fourth Proportional to 43,381.60, 65,094.18 and 17,105.20

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Solution

The fourth proportional to 43,381.60, 65,094.18 and 17,105.20 is: 25,666.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,381.60 : 65,094.18 = 17,105.20 : x
  2. Step 2: Convert to fraction form
    43,381.60/65,094.18 = 17,105.20/x
  3. Step 3: Cross multiply
    43,381.60x = 65,094.18 × 17,105.20
  4. Step 4: Simplify right side
    43,381.60x = 1,113,448,967.74
  5. Step 5: Solve for x
    x = 1,113,448,967.74/43,381.60
  6. Step 6: Final answer
    x = 25,666.39

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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.