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Finding the Fourth Proportional to 66,349.80, 99,281.70 and 48,853.80

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Solution

The fourth proportional to 66,349.80, 99,281.70 and 48,853.80 is: 73,101.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,349.80 : 99,281.70 = 48,853.80 : x
  2. Step 2: Convert to fraction form
    66,349.80/99,281.70 = 48,853.80/x
  3. Step 3: Cross multiply
    66,349.80x = 99,281.70 × 48,853.80
  4. Step 4: Simplify right side
    66,349.80x = 4,850,288,315.46
  5. Step 5: Solve for x
    x = 4,850,288,315.46/66,349.80
  6. Step 6: Final answer
    x = 73,101.78

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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.