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Finding the Fourth Proportional to 316,716.45, 437,068.83 and 173,478.88

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Solution

The fourth proportional to 316,716.45, 437,068.83 and 173,478.88 is: 239,400.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,716.45 : 437,068.83 = 173,478.88 : x
  2. Step 2: Convert to fraction form
    316,716.45/437,068.83 = 173,478.88/x
  3. Step 3: Cross multiply
    316,716.45x = 437,068.83 × 173,478.88
  4. Step 4: Simplify right side
    316,716.45x = 75,822,211,111.31
  5. Step 5: Solve for x
    x = 75,822,211,111.31/316,716.45
  6. Step 6: Final answer
    x = 239,400.93

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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.