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Finding the Fourth Proportional to 276,171.84, 381,130.06 and 153,664.90

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Solution

The fourth proportional to 276,171.84, 381,130.06 and 153,664.90 is: 212,064.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,171.84 : 381,130.06 = 153,664.90 : x
  2. Step 2: Convert to fraction form
    276,171.84/381,130.06 = 153,664.90/x
  3. Step 3: Cross multiply
    276,171.84x = 381,130.06 × 153,664.90
  4. Step 4: Simplify right side
    276,171.84x = 58,566,312,556.89
  5. Step 5: Solve for x
    x = 58,566,312,556.89/276,171.84
  6. Step 6: Final answer
    x = 212,064.75

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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.