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Finding the Fourth Proportional to 222,873.40, 307,490.49 and 127,312.44

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Solution

The fourth proportional to 222,873.40, 307,490.49 and 127,312.44 is: 175,648.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,873.40 : 307,490.49 = 127,312.44 : x
  2. Step 2: Convert to fraction form
    222,873.40/307,490.49 = 127,312.44/x
  3. Step 3: Cross multiply
    222,873.40x = 307,490.49 × 127,312.44
  4. Step 4: Simplify right side
    222,873.40x = 39,147,364,558.70
  5. Step 5: Solve for x
    x = 39,147,364,558.70/222,873.40
  6. Step 6: Final answer
    x = 175,648.44

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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.