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Finding the Fourth Proportional to 156,913.90, 235,370.85 and 156,913.90

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Solution

The fourth proportional to 156,913.90, 235,370.85 and 156,913.90 is: 235,370.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,913.90 : 235,370.85 = 156,913.90 : x
  2. Step 2: Convert to fraction form
    156,913.90/235,370.85 = 156,913.90/x
  3. Step 3: Cross multiply
    156,913.90x = 235,370.85 × 156,913.90
  4. Step 4: Simplify right side
    156,913.90x = 36,932,958,019.82
  5. Step 5: Solve for x
    x = 36,932,958,019.82/156,913.90
  6. Step 6: Final answer
    x = 235,370.85

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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.