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Finding the Fourth Proportional to 527,976.14, 728,563.54 and 298,556.88

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Solution

The fourth proportional to 527,976.14, 728,563.54 and 298,556.88 is: 411,983.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,976.14 : 728,563.54 = 298,556.88 : x
  2. Step 2: Convert to fraction form
    527,976.14/728,563.54 = 298,556.88/x
  3. Step 3: Cross multiply
    527,976.14x = 728,563.54 × 298,556.88
  4. Step 4: Simplify right side
    527,976.14x = 217,517,657,384.16
  5. Step 5: Solve for x
    x = 217,517,657,384.16/527,976.14
  6. Step 6: Final answer
    x = 411,983.88

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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.