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Finding the Fourth Proportional to 517,481.20, 714,105.48 and 288,030.88

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Solution

The fourth proportional to 517,481.20, 714,105.48 and 288,030.88 is: 397,472.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,481.20 : 714,105.48 = 288,030.88 : x
  2. Step 2: Convert to fraction form
    517,481.20/714,105.48 = 288,030.88/x
  3. Step 3: Cross multiply
    517,481.20x = 714,105.48 × 288,030.88
  4. Step 4: Simplify right side
    517,481.20x = 205,684,429,817.22
  5. Step 5: Solve for x
    x = 205,684,429,817.22/517,481.20
  6. Step 6: Final answer
    x = 397,472.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.