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Finding the Fourth Proportional to 535,388.20, 803,104.18 and 136,039.28

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Solution

The fourth proportional to 535,388.20, 803,104.18 and 136,039.28 is: 204,064.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,388.20 : 803,104.18 = 136,039.28 : x
  2. Step 2: Convert to fraction form
    535,388.20/803,104.18 = 136,039.28/x
  3. Step 3: Cross multiply
    535,388.20x = 803,104.18 × 136,039.28
  4. Step 4: Simplify right side
    535,388.20x = 109,253,710,056.57
  5. Step 5: Solve for x
    x = 109,253,710,056.57/535,388.20
  6. Step 6: Final answer
    x = 204,064.47

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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.