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Finding the Fourth Proportional to 154,411.80, 231,444.90 and 65,650.20

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Solution

The fourth proportional to 154,411.80, 231,444.90 and 65,650.20 is: 98,401.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,411.80 : 231,444.90 = 65,650.20 : x
  2. Step 2: Convert to fraction form
    154,411.80/231,444.90 = 65,650.20/x
  3. Step 3: Cross multiply
    154,411.80x = 231,444.90 × 65,650.20
  4. Step 4: Simplify right side
    154,411.80x = 15,194,403,973.98
  5. Step 5: Solve for x
    x = 15,194,403,973.98/154,411.80
  6. Step 6: Final answer
    x = 98,401.83

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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.