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Finding the Fourth Proportional to 260,985.66, 360,154.08 and 153,562.65

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Solution

The fourth proportional to 260,985.66, 360,154.08 and 153,562.65 is: 211,912.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,985.66 : 360,154.08 = 153,562.65 : x
  2. Step 2: Convert to fraction form
    260,985.66/360,154.08 = 153,562.65/x
  3. Step 3: Cross multiply
    260,985.66x = 360,154.08 × 153,562.65
  4. Step 4: Simplify right side
    260,985.66x = 55,306,213,582.53
  5. Step 5: Solve for x
    x = 55,306,213,582.53/260,985.66
  6. Step 6: Final answer
    x = 211,912.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.