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Finding the Fourth Proportional to 207,086.40, 310,629.60 and 201,254.40

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Solution

The fourth proportional to 207,086.40, 310,629.60 and 201,254.40 is: 301,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,086.40 : 310,629.60 = 201,254.40 : x
  2. Step 2: Convert to fraction form
    207,086.40/310,629.60 = 201,254.40/x
  3. Step 3: Cross multiply
    207,086.40x = 310,629.60 × 201,254.40
  4. Step 4: Simplify right side
    207,086.40x = 62,515,573,770.24
  5. Step 5: Solve for x
    x = 62,515,573,770.24/207,086.40
  6. Step 6: Final answer
    x = 301,881.60

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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.