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Finding the Fourth Proportional to 156,911.45, 235,367.18 and 156,911.45

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Solution

The fourth proportional to 156,911.45, 235,367.18 and 156,911.45 is: 235,367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,911.45 : 235,367.18 = 156,911.45 : x
  2. Step 2: Convert to fraction form
    156,911.45/235,367.18 = 156,911.45/x
  3. Step 3: Cross multiply
    156,911.45x = 235,367.18 × 156,911.45
  4. Step 4: Simplify right side
    156,911.45x = 36,931,805,496.21
  5. Step 5: Solve for x
    x = 36,931,805,496.21/156,911.45
  6. Step 6: Final answer
    x = 235,367.18

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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.