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Finding the Fourth Proportional to 58,090.40, 86,905.20 and 50,384.80

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Solution

The fourth proportional to 58,090.40, 86,905.20 and 50,384.80 is: 75,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,090.40 : 86,905.20 = 50,384.80 : x
  2. Step 2: Convert to fraction form
    58,090.40/86,905.20 = 50,384.80/x
  3. Step 3: Cross multiply
    58,090.40x = 86,905.20 × 50,384.80
  4. Step 4: Simplify right side
    58,090.40x = 4,378,701,120.96
  5. Step 5: Solve for x
    x = 4,378,701,120.96/58,090.40
  6. Step 6: Final answer
    x = 75,377.36

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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.