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Finding the Fourth Proportional to 768,809.07, 1,060,950.18 and 419,949.76

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Solution

The fourth proportional to 768,809.07, 1,060,950.18 and 419,949.76 is: 579,527.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,809.07 : 1,060,950.18 = 419,949.76 : x
  2. Step 2: Convert to fraction form
    768,809.07/1,060,950.18 = 419,949.76/x
  3. Step 3: Cross multiply
    768,809.07x = 1,060,950.18 × 419,949.76
  4. Step 4: Simplify right side
    768,809.07x = 445,545,771,363.21
  5. Step 5: Solve for x
    x = 445,545,771,363.21/768,809.07
  6. Step 6: Final answer
    x = 579,527.21

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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.