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Finding the Fourth Proportional to 527,520.68, 727,978.68 and 285,804.92

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Solution

The fourth proportional to 527,520.68, 727,978.68 and 285,804.92 is: 394,410.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,520.68 : 727,978.68 = 285,804.92 : x
  2. Step 2: Convert to fraction form
    527,520.68/727,978.68 = 285,804.92/x
  3. Step 3: Cross multiply
    527,520.68x = 727,978.68 × 285,804.92
  4. Step 4: Simplify right side
    527,520.68x = 208,059,888,399.11
  5. Step 5: Solve for x
    x = 208,059,888,399.11/527,520.68
  6. Step 6: Final answer
    x = 394,410.87

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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.