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Finding the Fourth Proportional to 156,963.70, 235,445.55 and 63,421.30

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Solution

The fourth proportional to 156,963.70, 235,445.55 and 63,421.30 is: 95,131.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,963.70 : 235,445.55 = 63,421.30 : x
  2. Step 2: Convert to fraction form
    156,963.70/235,445.55 = 63,421.30/x
  3. Step 3: Cross multiply
    156,963.70x = 235,445.55 × 63,421.30
  4. Step 4: Simplify right side
    156,963.70x = 14,932,262,860.22
  5. Step 5: Solve for x
    x = 14,932,262,860.22/156,963.70
  6. Step 6: Final answer
    x = 95,131.95

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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.