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Finding the Fourth Proportional to 320,649.22, 480,602.04 and 120,841.66

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Solution

The fourth proportional to 320,649.22, 480,602.04 and 120,841.66 is: 181,122.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,649.22 : 480,602.04 = 120,841.66 : x
  2. Step 2: Convert to fraction form
    320,649.22/480,602.04 = 120,841.66/x
  3. Step 3: Cross multiply
    320,649.22x = 480,602.04 × 120,841.66
  4. Step 4: Simplify right side
    320,649.22x = 58,076,748,312.99
  5. Step 5: Solve for x
    x = 58,076,748,312.99/320,649.22
  6. Step 6: Final answer
    x = 181,122.38

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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.