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Finding the Fourth Proportional to 447,745.56, 671,623.51 and 191,543.28

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Solution

The fourth proportional to 447,745.56, 671,623.51 and 191,543.28 is: 287,317.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,745.56 : 671,623.51 = 191,543.28 : x
  2. Step 2: Convert to fraction form
    447,745.56/671,623.51 = 191,543.28/x
  3. Step 3: Cross multiply
    447,745.56x = 671,623.51 × 191,543.28
  4. Step 4: Simplify right side
    447,745.56x = 128,644,970,030.51
  5. Step 5: Solve for x
    x = 128,644,970,030.51/447,745.56
  6. Step 6: Final answer
    x = 287,317.13

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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.