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Finding the Fourth Proportional to 316,561.80, 474,842.70 and 94,945.80

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Solution

The fourth proportional to 316,561.80, 474,842.70 and 94,945.80 is: 142,418.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,561.80 : 474,842.70 = 94,945.80 : x
  2. Step 2: Convert to fraction form
    316,561.80/474,842.70 = 94,945.80/x
  3. Step 3: Cross multiply
    316,561.80x = 474,842.70 × 94,945.80
  4. Step 4: Simplify right side
    316,561.80x = 45,084,320,025.66
  5. Step 5: Solve for x
    x = 45,084,320,025.66/316,561.80
  6. Step 6: Final answer
    x = 142,418.70

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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.