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Finding the Fourth Proportional to 356,730.40, 535,105.34 and 104,004.78

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Solution

The fourth proportional to 356,730.40, 535,105.34 and 104,004.78 is: 156,010.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,730.40 : 535,105.34 = 104,004.78 : x
  2. Step 2: Convert to fraction form
    356,730.40/535,105.34 = 104,004.78/x
  3. Step 3: Cross multiply
    356,730.40x = 535,105.34 × 104,004.78
  4. Step 4: Simplify right side
    356,730.40x = 55,653,514,761.30
  5. Step 5: Solve for x
    x = 55,653,514,761.30/356,730.40
  6. Step 6: Final answer
    x = 156,010.01

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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.