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Finding the Fourth Proportional to 356,939.18, 535,351.32 and 104,160.32

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Solution

The fourth proportional to 356,939.18, 535,351.32 and 104,160.32 is: 156,223.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,939.18 : 535,351.32 = 104,160.32 : x
  2. Step 2: Convert to fraction form
    356,939.18/535,351.32 = 104,160.32/x
  3. Step 3: Cross multiply
    356,939.18x = 535,351.32 × 104,160.32
  4. Step 4: Simplify right side
    356,939.18x = 55,762,364,803.62
  5. Step 5: Solve for x
    x = 55,762,364,803.62/356,939.18
  6. Step 6: Final answer
    x = 156,223.72

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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.