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Finding the Fourth Proportional to 261,738.90, 392,025.15 and 226,746.90

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Solution

The fourth proportional to 261,738.90, 392,025.15 and 226,746.90 is: 339,615.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,738.90 : 392,025.15 = 226,746.90 : x
  2. Step 2: Convert to fraction form
    261,738.90/392,025.15 = 226,746.90/x
  3. Step 3: Cross multiply
    261,738.90x = 392,025.15 × 226,746.90
  4. Step 4: Simplify right side
    261,738.90x = 88,890,487,484.54
  5. Step 5: Solve for x
    x = 88,890,487,484.54/261,738.90
  6. Step 6: Final answer
    x = 339,615.12

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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.