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Finding the Fourth Proportional to 647,569.30, 971,353.95 and 505,851.70

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Solution

The fourth proportional to 647,569.30, 971,353.95 and 505,851.70 is: 758,777.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,569.30 : 971,353.95 = 505,851.70 : x
  2. Step 2: Convert to fraction form
    647,569.30/971,353.95 = 505,851.70/x
  3. Step 3: Cross multiply
    647,569.30x = 971,353.95 × 505,851.70
  4. Step 4: Simplify right side
    647,569.30x = 491,361,046,909.22
  5. Step 5: Solve for x
    x = 491,361,046,909.22/647,569.30
  6. Step 6: Final answer
    x = 758,777.55

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Similar ratio
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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.