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Finding the Fourth Proportional to 690,687.88, 953,062.50 and 384,687.16

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Solution

The fourth proportional to 690,687.88, 953,062.50 and 384,687.16 is: 530,819.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,687.88 : 953,062.50 = 384,687.16 : x
  2. Step 2: Convert to fraction form
    690,687.88/953,062.50 = 384,687.16/x
  3. Step 3: Cross multiply
    690,687.88x = 953,062.50 × 384,687.16
  4. Step 4: Simplify right side
    690,687.88x = 366,630,905,487.42
  5. Step 5: Solve for x
    x = 366,630,905,487.42/690,687.88
  6. Step 6: Final answer
    x = 530,819.95

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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.