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Finding the Fourth Proportional to 279,000.45, 418,664.70 and 101,525.40

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Solution

The fourth proportional to 279,000.45, 418,664.70 and 101,525.40 is: 152,347.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,000.45 : 418,664.70 = 101,525.40 : x
  2. Step 2: Convert to fraction form
    279,000.45/418,664.70 = 101,525.40/x
  3. Step 3: Cross multiply
    279,000.45x = 418,664.70 × 101,525.40
  4. Step 4: Simplify right side
    279,000.45x = 42,505,101,133.38
  5. Step 5: Solve for x
    x = 42,505,101,133.38/279,000.45
  6. Step 6: Final answer
    x = 152,347.79

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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.