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Finding the Fourth Proportional to 666,313.68, 999,470.52 and 192,999.19

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Solution

The fourth proportional to 666,313.68, 999,470.52 and 192,999.19 is: 289,498.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,313.68 : 999,470.52 = 192,999.19 : x
  2. Step 2: Convert to fraction form
    666,313.68/999,470.52 = 192,999.19/x
  3. Step 3: Cross multiply
    666,313.68x = 999,470.52 × 192,999.19
  4. Step 4: Simplify right side
    666,313.68x = 192,897,000,788.88
  5. Step 5: Solve for x
    x = 192,897,000,788.88/666,313.68
  6. Step 6: Final answer
    x = 289,498.79

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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.