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Finding the Fourth Proportional to 279,417.71, 419,000.47 and 79,690.62

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Solution

The fourth proportional to 279,417.71, 419,000.47 and 79,690.62 is: 119,499.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,417.71 : 419,000.47 = 79,690.62 : x
  2. Step 2: Convert to fraction form
    279,417.71/419,000.47 = 79,690.62/x
  3. Step 3: Cross multiply
    279,417.71x = 419,000.47 × 79,690.62
  4. Step 4: Simplify right side
    279,417.71x = 33,390,409,054.88
  5. Step 5: Solve for x
    x = 33,390,409,054.88/279,417.71
  6. Step 6: Final answer
    x = 119,499.97

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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.