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Finding the Fourth Proportional to 527,567.09, 728,041.55 and 285,856.20

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Solution

The fourth proportional to 527,567.09, 728,041.55 and 285,856.20 is: 394,481.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,567.09 : 728,041.55 = 285,856.20 : x
  2. Step 2: Convert to fraction form
    527,567.09/728,041.55 = 285,856.20/x
  3. Step 3: Cross multiply
    527,567.09x = 728,041.55 × 285,856.20
  4. Step 4: Simplify right side
    527,567.09x = 208,115,193,459.85
  5. Step 5: Solve for x
    x = 208,115,193,459.85/527,567.09
  6. Step 6: Final answer
    x = 394,481.00

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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.