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Finding the Fourth Proportional to 316,356.22, 474,534.60 and 79,696.90

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Solution

The fourth proportional to 316,356.22, 474,534.60 and 79,696.90 is: 119,545.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,356.22 : 474,534.60 = 79,696.90 : x
  2. Step 2: Convert to fraction form
    316,356.22/474,534.60 = 79,696.90/x
  3. Step 3: Cross multiply
    316,356.22x = 474,534.60 × 79,696.90
  4. Step 4: Simplify right side
    316,356.22x = 37,818,936,562.74
  5. Step 5: Solve for x
    x = 37,818,936,562.74/316,356.22
  6. Step 6: Final answer
    x = 119,545.42

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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.