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Finding the Fourth Proportional to 527,338.76, 727,721.70 and 285,615.32

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Solution

The fourth proportional to 527,338.76, 727,721.70 and 285,615.32 is: 394,146.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,338.76 : 727,721.70 = 285,615.32 : x
  2. Step 2: Convert to fraction form
    527,338.76/727,721.70 = 285,615.32/x
  3. Step 3: Cross multiply
    527,338.76x = 727,721.70 × 285,615.32
  4. Step 4: Simplify right side
    527,338.76x = 207,848,466,216.44
  5. Step 5: Solve for x
    x = 207,848,466,216.44/527,338.76
  6. Step 6: Final answer
    x = 394,146.01

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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.