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Finding the Fourth Proportional to 527,567.12, 728,041.61 and 285,856.23

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Solution

The fourth proportional to 527,567.12, 728,041.61 and 285,856.23 is: 394,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,567.12 : 728,041.61 = 285,856.23 : x
  2. Step 2: Convert to fraction form
    527,567.12/728,041.61 = 285,856.23/x
  3. Step 3: Cross multiply
    527,567.12x = 728,041.61 × 285,856.23
  4. Step 4: Simplify right side
    527,567.12x = 208,115,230,632.37
  5. Step 5: Solve for x
    x = 208,115,230,632.37/527,567.12
  6. Step 6: Final answer
    x = 394,481.05

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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.