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Finding the Fourth Proportional to 356,728.70, 535,175.13 and 120,065.06

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Solution

The fourth proportional to 356,728.70, 535,175.13 and 120,065.06 is: 180,125.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,728.70 : 535,175.13 = 120,065.06 : x
  2. Step 2: Convert to fraction form
    356,728.70/535,175.13 = 120,065.06/x
  3. Step 3: Cross multiply
    356,728.70x = 535,175.13 × 120,065.06
  4. Step 4: Simplify right side
    356,728.70x = 64,255,834,093.96
  5. Step 5: Solve for x
    x = 64,255,834,093.96/356,728.70
  6. Step 6: Final answer
    x = 180,125.22

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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.