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Finding the Fourth Proportional to 985,376.19, 1,477,605 and 511,934.43

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Solution

The fourth proportional to 985,376.19, 1,477,605 and 511,934.43 is: 767,663.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,376.19 : 1,477,605 = 511,934.43 : x
  2. Step 2: Convert to fraction form
    985,376.19/1,477,605 = 511,934.43/x
  3. Step 3: Cross multiply
    985,376.19x = 1,477,605 × 511,934.43
  4. Step 4: Simplify right side
    985,376.19x = 756,436,873,440.15
  5. Step 5: Solve for x
    x = 756,436,873,440.15/985,376.19
  6. Step 6: Final answer
    x = 767,663.03

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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.