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Finding the Fourth Proportional to 85,000.66, 127,384.35 and 53,780.02

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Solution

The fourth proportional to 85,000.66, 127,384.35 and 53,780.02 is: 80,596.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,000.66 : 127,384.35 = 53,780.02 : x
  2. Step 2: Convert to fraction form
    85,000.66/127,384.35 = 53,780.02/x
  3. Step 3: Cross multiply
    85,000.66x = 127,384.35 × 53,780.02
  4. Step 4: Simplify right side
    85,000.66x = 6,850,732,890.69
  5. Step 5: Solve for x
    x = 6,850,732,890.69/85,000.66
  6. Step 6: Final answer
    x = 80,596.23

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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.