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Finding the Fourth Proportional to 20,571,699.60, 30,857,549.40 and 17,237,350.80

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Solution

The fourth proportional to 20,571,699.60, 30,857,549.40 and 17,237,350.80 is: 25,856,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571,699.60 : 30,857,549.40 = 17,237,350.80 : x
  2. Step 2: Convert to fraction form
    20,571,699.60/30,857,549.40 = 17,237,350.80/x
  3. Step 3: Cross multiply
    20,571,699.60x = 30,857,549.40 × 17,237,350.80
  4. Step 4: Simplify right side
    20,571,699.60x = 531,902,403,836,129.50
  5. Step 5: Solve for x
    x = 531,902,403,836,129.50/20,571,699.60
  6. Step 6: Final answer
    x = 25,856,026.20

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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.