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Finding the Fourth Proportional to 316,285.94, 436,470.72 and 173,043.92

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Solution

The fourth proportional to 316,285.94, 436,470.72 and 173,043.92 is: 238,798.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,285.94 : 436,470.72 = 173,043.92 : x
  2. Step 2: Convert to fraction form
    316,285.94/436,470.72 = 173,043.92/x
  3. Step 3: Cross multiply
    316,285.94x = 436,470.72 × 173,043.92
  4. Step 4: Simplify right side
    316,285.94x = 75,528,604,354.02
  5. Step 5: Solve for x
    x = 75,528,604,354.02/316,285.94
  6. Step 6: Final answer
    x = 238,798.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.