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Finding the Fourth Proportional to 456,507.80, 684,761.70 and 156,961.70

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Solution

The fourth proportional to 456,507.80, 684,761.70 and 156,961.70 is: 235,442.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,507.80 : 684,761.70 = 156,961.70 : x
  2. Step 2: Convert to fraction form
    456,507.80/684,761.70 = 156,961.70/x
  3. Step 3: Cross multiply
    456,507.80x = 684,761.70 × 156,961.70
  4. Step 4: Simplify right side
    456,507.80x = 107,481,360,526.89
  5. Step 5: Solve for x
    x = 107,481,360,526.89/456,507.80
  6. Step 6: Final answer
    x = 235,442.55

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1.5x scale

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.