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Finding the Fourth Proportional to 369,608.88, 554,355.72 and 120,289.20

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Solution

The fourth proportional to 369,608.88, 554,355.72 and 120,289.20 is: 180,415.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,608.88 : 554,355.72 = 120,289.20 : x
  2. Step 2: Convert to fraction form
    369,608.88/554,355.72 = 120,289.20/x
  3. Step 3: Cross multiply
    369,608.88x = 554,355.72 × 120,289.20
  4. Step 4: Simplify right side
    369,608.88x = 66,683,006,074.22
  5. Step 5: Solve for x
    x = 66,683,006,074.22/369,608.88
  6. Step 6: Final answer
    x = 180,415.05

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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.