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Finding the Fourth Proportional to 279,552.60, 419,328.90 and 190,979.10

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Solution

The fourth proportional to 279,552.60, 419,328.90 and 190,979.10 is: 286,468.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,552.60 : 419,328.90 = 190,979.10 : x
  2. Step 2: Convert to fraction form
    279,552.60/419,328.90 = 190,979.10/x
  3. Step 3: Cross multiply
    279,552.60x = 419,328.90 × 190,979.10
  4. Step 4: Simplify right side
    279,552.60x = 80,083,055,925.99
  5. Step 5: Solve for x
    x = 80,083,055,925.99/279,552.60
  6. Step 6: Final answer
    x = 286,468.65

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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.