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Finding the Fourth Proportional to 357,889.36, 536,440.38 and 147,412.48

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Solution

The fourth proportional to 357,889.36, 536,440.38 and 147,412.48 is: 220,956.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,889.36 : 536,440.38 = 147,412.48 : x
  2. Step 2: Convert to fraction form
    357,889.36/536,440.38 = 147,412.48/x
  3. Step 3: Cross multiply
    357,889.36x = 536,440.38 × 147,412.48
  4. Step 4: Simplify right side
    357,889.36x = 79,078,006,787.94
  5. Step 5: Solve for x
    x = 79,078,006,787.94/357,889.36
  6. Step 6: Final answer
    x = 220,956.57

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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.