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Finding the Fourth Proportional to 527,503.66, 727,955.22 and 285,787.90

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Solution

The fourth proportional to 527,503.66, 727,955.22 and 285,787.90 is: 394,387.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,503.66 : 727,955.22 = 285,787.90 : x
  2. Step 2: Convert to fraction form
    527,503.66/727,955.22 = 285,787.90/x
  3. Step 3: Cross multiply
    527,503.66x = 727,955.22 × 285,787.90
  4. Step 4: Simplify right side
    527,503.66x = 208,040,793,617.84
  5. Step 5: Solve for x
    x = 208,040,793,617.84/527,503.66
  6. Step 6: Final answer
    x = 394,387.39

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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.