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Finding the Fourth Proportional to 663,171.68, 915,148.32 and 376,690.88

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Solution

The fourth proportional to 663,171.68, 915,148.32 and 376,690.88 is: 519,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,171.68 : 915,148.32 = 376,690.88 : x
  2. Step 2: Convert to fraction form
    663,171.68/915,148.32 = 376,690.88/x
  3. Step 3: Cross multiply
    663,171.68x = 915,148.32 × 376,690.88
  4. Step 4: Simplify right side
    663,171.68x = 344,728,025,991.32
  5. Step 5: Solve for x
    x = 344,728,025,991.32/663,171.68
  6. Step 6: Final answer
    x = 519,817.17

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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.