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Finding the Fourth Proportional to 206,565.40, 309,848.10 and 73,595.80

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Solution

The fourth proportional to 206,565.40, 309,848.10 and 73,595.80 is: 110,393.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,565.40 : 309,848.10 = 73,595.80 : x
  2. Step 2: Convert to fraction form
    206,565.40/309,848.10 = 73,595.80/x
  3. Step 3: Cross multiply
    206,565.40x = 309,848.10 × 73,595.80
  4. Step 4: Simplify right side
    206,565.40x = 22,803,518,797.98
  5. Step 5: Solve for x
    x = 22,803,518,797.98/206,565.40
  6. Step 6: Final answer
    x = 110,393.70

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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.