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Finding the Fourth Proportional to 352,085.76, 527,996.05 and 127,390.64

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Solution

The fourth proportional to 352,085.76, 527,996.05 and 127,390.64 is: 191,037.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,085.76 : 527,996.05 = 127,390.64 : x
  2. Step 2: Convert to fraction form
    352,085.76/527,996.05 = 127,390.64/x
  3. Step 3: Cross multiply
    352,085.76x = 527,996.05 × 127,390.64
  4. Step 4: Simplify right side
    352,085.76x = 67,261,754,090.02
  5. Step 5: Solve for x
    x = 67,261,754,090.02/352,085.76
  6. Step 6: Final answer
    x = 191,037.99

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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.