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Finding the Fourth Proportional to 447,673.12, 671,509.68 and 148,073.20

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Solution

The fourth proportional to 447,673.12, 671,509.68 and 148,073.20 is: 222,109.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,673.12 : 671,509.68 = 148,073.20 : x
  2. Step 2: Convert to fraction form
    447,673.12/671,509.68 = 148,073.20/x
  3. Step 3: Cross multiply
    447,673.12x = 671,509.68 × 148,073.20
  4. Step 4: Simplify right side
    447,673.12x = 99,432,587,148.58
  5. Step 5: Solve for x
    x = 99,432,587,148.58/447,673.12
  6. Step 6: Final answer
    x = 222,109.80

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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.