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Finding the Fourth Proportional to 344,063.20, 516,094.80 and 91,343.20

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Solution

The fourth proportional to 344,063.20, 516,094.80 and 91,343.20 is: 137,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,063.20 : 516,094.80 = 91,343.20 : x
  2. Step 2: Convert to fraction form
    344,063.20/516,094.80 = 91,343.20/x
  3. Step 3: Cross multiply
    344,063.20x = 516,094.80 × 91,343.20
  4. Step 4: Simplify right side
    344,063.20x = 47,141,750,535.36
  5. Step 5: Solve for x
    x = 47,141,750,535.36/344,063.20
  6. Step 6: Final answer
    x = 137,014.80

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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.