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Finding the Fourth Proportional to 631,998.80, 947,652.60 and 257,598.80

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Solution

The fourth proportional to 631,998.80, 947,652.60 and 257,598.80 is: 386,257.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,998.80 : 947,652.60 = 257,598.80 : x
  2. Step 2: Convert to fraction form
    631,998.80/947,652.60 = 257,598.80/x
  3. Step 3: Cross multiply
    631,998.80x = 947,652.60 × 257,598.80
  4. Step 4: Simplify right side
    631,998.80x = 244,114,172,576.88
  5. Step 5: Solve for x
    x = 244,114,172,576.88/631,998.80
  6. Step 6: Final answer
    x = 386,257.34

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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.