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Finding the Fourth Proportional to 638,997.76, 958,490.88 and 245,013.76

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Solution

The fourth proportional to 638,997.76, 958,490.88 and 245,013.76 is: 367,518.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,997.76 : 958,490.88 = 245,013.76 : x
  2. Step 2: Convert to fraction form
    638,997.76/958,490.88 = 245,013.76/x
  3. Step 3: Cross multiply
    638,997.76x = 958,490.88 × 245,013.76
  4. Step 4: Simplify right side
    638,997.76x = 234,843,454,434.51
  5. Step 5: Solve for x
    x = 234,843,454,434.51/638,997.76
  6. Step 6: Final answer
    x = 367,518.43

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.