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Finding the Fourth Proportional to 316,699.81, 475,066.05 and 80,044.54

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Solution

The fourth proportional to 316,699.81, 475,066.05 and 80,044.54 is: 120,070.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,699.81 : 475,066.05 = 80,044.54 : x
  2. Step 2: Convert to fraction form
    316,699.81/475,066.05 = 80,044.54/x
  3. Step 3: Cross multiply
    316,699.81x = 475,066.05 × 80,044.54
  4. Step 4: Simplify right side
    316,699.81x = 38,026,443,441.87
  5. Step 5: Solve for x
    x = 38,026,443,441.87/316,699.81
  6. Step 6: Final answer
    x = 120,070.94

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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.