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Finding the Fourth Proportional to 527,649.71, 728,169.91 and 323,813.21

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Solution

The fourth proportional to 527,649.71, 728,169.91 and 323,813.21 is: 446,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,649.71 : 728,169.91 = 323,813.21 : x
  2. Step 2: Convert to fraction form
    527,649.71/728,169.91 = 323,813.21/x
  3. Step 3: Cross multiply
    527,649.71x = 728,169.91 × 323,813.21
  4. Step 4: Simplify right side
    527,649.71x = 235,791,034,363.45
  5. Step 5: Solve for x
    x = 235,791,034,363.45/527,649.71
  6. Step 6: Final answer
    x = 446,870.40

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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.