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Finding the Fourth Proportional to 276,097.39, 381,009.78 and 153,588.31

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Solution

The fourth proportional to 276,097.39, 381,009.78 and 153,588.31 is: 211,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,097.39 : 381,009.78 = 153,588.31 : x
  2. Step 2: Convert to fraction form
    276,097.39/381,009.78 = 153,588.31/x
  3. Step 3: Cross multiply
    276,097.39x = 381,009.78 × 153,588.31
  4. Step 4: Simplify right side
    276,097.39x = 58,518,648,203.67
  5. Step 5: Solve for x
    x = 58,518,648,203.67/276,097.39
  6. Step 6: Final answer
    x = 211,949.30

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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.