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Finding the Fourth Proportional to 435,621.78, 653,334.03 and 165,653.34

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Solution

The fourth proportional to 435,621.78, 653,334.03 and 165,653.34 is: 248,442.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,621.78 : 653,334.03 = 165,653.34 : x
  2. Step 2: Convert to fraction form
    435,621.78/653,334.03 = 165,653.34/x
  3. Step 3: Cross multiply
    435,621.78x = 653,334.03 × 165,653.34
  4. Step 4: Simplify right side
    435,621.78x = 108,226,964,205.16
  5. Step 5: Solve for x
    x = 108,226,964,205.16/435,621.78
  6. Step 6: Final answer
    x = 248,442.50

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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.