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Finding the Fourth Proportional to 316,699.20, 437,043.60 and 173,468.16

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Solution

The fourth proportional to 316,699.20, 437,043.60 and 173,468.16 is: 239,385.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,699.20 : 437,043.60 = 173,468.16 : x
  2. Step 2: Convert to fraction form
    316,699.20/437,043.60 = 173,468.16/x
  3. Step 3: Cross multiply
    316,699.20x = 437,043.60 × 173,468.16
  4. Step 4: Simplify right side
    316,699.20x = 75,813,149,131.78
  5. Step 5: Solve for x
    x = 75,813,149,131.78/316,699.20
  6. Step 6: Final answer
    x = 239,385.35

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1.5x scale

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.