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Finding the Fourth Proportional to 154,530.90, 231,685.65 and 59,679.90

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Solution

The fourth proportional to 154,530.90, 231,685.65 and 59,679.90 is: 89,477.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,530.90 : 231,685.65 = 59,679.90 : x
  2. Step 2: Convert to fraction form
    154,530.90/231,685.65 = 59,679.90/x
  3. Step 3: Cross multiply
    154,530.90x = 231,685.65 × 59,679.90
  4. Step 4: Simplify right side
    154,530.90x = 13,826,976,423.44
  5. Step 5: Solve for x
    x = 13,826,976,423.44/154,530.90
  6. Step 6: Final answer
    x = 89,477.10

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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.