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Finding the Fourth Proportional to 437,235.10, 655,852.65 and 156,780.70

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Solution

The fourth proportional to 437,235.10, 655,852.65 and 156,780.70 is: 235,171.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,235.10 : 655,852.65 = 156,780.70 : x
  2. Step 2: Convert to fraction form
    437,235.10/655,852.65 = 156,780.70/x
  3. Step 3: Cross multiply
    437,235.10x = 655,852.65 × 156,780.70
  4. Step 4: Simplify right side
    437,235.10x = 102,825,037,563.86
  5. Step 5: Solve for x
    x = 102,825,037,563.86/437,235.10
  6. Step 6: Final answer
    x = 235,171.05

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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.