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Finding the Fourth Proportional to 527,458.51, 728,858.28 and 383,969.44

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Solution

The fourth proportional to 527,458.51, 728,858.28 and 383,969.44 is: 530,580.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,458.51 : 728,858.28 = 383,969.44 : x
  2. Step 2: Convert to fraction form
    527,458.51/728,858.28 = 383,969.44/x
  3. Step 3: Cross multiply
    527,458.51x = 728,858.28 × 383,969.44
  4. Step 4: Simplify right side
    527,458.51x = 279,859,305,610.96
  5. Step 5: Solve for x
    x = 279,859,305,610.96/527,458.51
  6. Step 6: Final answer
    x = 530,580.70

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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.