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Finding the Fourth Proportional to 165,658.50, 248,490.18 and 40,999.50

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Solution

The fourth proportional to 165,658.50, 248,490.18 and 40,999.50 is: 61,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,658.50 : 248,490.18 = 40,999.50 : x
  2. Step 2: Convert to fraction form
    165,658.50/248,490.18 = 40,999.50/x
  3. Step 3: Cross multiply
    165,658.50x = 248,490.18 × 40,999.50
  4. Step 4: Simplify right side
    165,658.50x = 10,187,973,134.91
  5. Step 5: Solve for x
    x = 10,187,973,134.91/165,658.50
  6. Step 6: Final answer
    x = 61,499.85

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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.