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Finding the Fourth Proportional to 447,889.80, 671,929.44 and 148,353.40

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Solution

The fourth proportional to 447,889.80, 671,929.44 and 148,353.40 is: 222,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,889.80 : 671,929.44 = 148,353.40 : x
  2. Step 2: Convert to fraction form
    447,889.80/671,929.44 = 148,353.40/x
  3. Step 3: Cross multiply
    447,889.80x = 671,929.44 × 148,353.40
  4. Step 4: Simplify right side
    447,889.80x = 99,683,016,984.10
  5. Step 5: Solve for x
    x = 99,683,016,984.10/447,889.80
  6. Step 6: Final answer
    x = 222,561.48

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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.