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Finding the Fourth Proportional to 178,043.91, 245,700.21 and 97,470.78

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Solution

The fourth proportional to 178,043.91, 245,700.21 and 97,470.78 is: 134,509.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,043.91 : 245,700.21 = 97,470.78 : x
  2. Step 2: Convert to fraction form
    178,043.91/245,700.21 = 97,470.78/x
  3. Step 3: Cross multiply
    178,043.91x = 245,700.21 × 97,470.78
  4. Step 4: Simplify right side
    178,043.91x = 23,948,591,114.86
  5. Step 5: Solve for x
    x = 23,948,591,114.86/178,043.91
  6. Step 6: Final answer
    x = 134,509.47

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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.