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Finding the Fourth Proportional to 208,906.40, 288,105.18 and 168,607.28

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Solution

The fourth proportional to 208,906.40, 288,105.18 and 168,607.28 is: 232,528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,906.40 : 288,105.18 = 168,607.28 : x
  2. Step 2: Convert to fraction form
    208,906.40/288,105.18 = 168,607.28/x
  3. Step 3: Cross multiply
    208,906.40x = 288,105.18 × 168,607.28
  4. Step 4: Simplify right side
    208,906.40x = 48,576,630,753.71
  5. Step 5: Solve for x
    x = 48,576,630,753.71/208,906.40
  6. Step 6: Final answer
    x = 232,528.21

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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.