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Finding the Fourth Proportional to 262,063.20, 393,094.80 and 72,523.20

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Solution

The fourth proportional to 262,063.20, 393,094.80 and 72,523.20 is: 108,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,063.20 : 393,094.80 = 72,523.20 : x
  2. Step 2: Convert to fraction form
    262,063.20/393,094.80 = 72,523.20/x
  3. Step 3: Cross multiply
    262,063.20x = 393,094.80 × 72,523.20
  4. Step 4: Simplify right side
    262,063.20x = 28,508,492,799.36
  5. Step 5: Solve for x
    x = 28,508,492,799.36/262,063.20
  6. Step 6: Final answer
    x = 108,784.80

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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.