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Finding the Fourth Proportional to 231,628.30, 347,442.45 and 98,512.90

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Solution

The fourth proportional to 231,628.30, 347,442.45 and 98,512.90 is: 147,769.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,628.30 : 347,442.45 = 98,512.90 : x
  2. Step 2: Convert to fraction form
    231,628.30/347,442.45 = 98,512.90/x
  3. Step 3: Cross multiply
    231,628.30x = 347,442.45 × 98,512.90
  4. Step 4: Simplify right side
    231,628.30x = 34,227,563,332.61
  5. Step 5: Solve for x
    x = 34,227,563,332.61/231,628.30
  6. Step 6: Final answer
    x = 147,769.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.