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Finding the Fourth Proportional to 261,117.66, 391,851.54 and 94,905.66

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Solution

The fourth proportional to 261,117.66, 391,851.54 and 94,905.66 is: 142,422.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,117.66 : 391,851.54 = 94,905.66 : x
  2. Step 2: Convert to fraction form
    261,117.66/391,851.54 = 94,905.66/x
  3. Step 3: Cross multiply
    261,117.66x = 391,851.54 × 94,905.66
  4. Step 4: Simplify right side
    261,117.66x = 37,188,929,025.72
  5. Step 5: Solve for x
    x = 37,188,929,025.72/261,117.66
  6. Step 6: Final answer
    x = 142,422.11

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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.