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Finding the Fourth Proportional to 356,719.26, 535,134.15 and 120,043.47

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Solution

The fourth proportional to 356,719.26, 535,134.15 and 120,043.47 is: 180,083.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,719.26 : 535,134.15 = 120,043.47 : x
  2. Step 2: Convert to fraction form
    356,719.26/535,134.15 = 120,043.47/x
  3. Step 3: Cross multiply
    356,719.26x = 535,134.15 × 120,043.47
  4. Step 4: Simplify right side
    356,719.26x = 64,239,360,281.50
  5. Step 5: Solve for x
    x = 64,239,360,281.50/356,719.26
  6. Step 6: Final answer
    x = 180,083.80

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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.