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Finding the Fourth Proportional to 66,772.98, 99,652.50 and 64,060.20

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Solution

The fourth proportional to 66,772.98, 99,652.50 and 64,060.20 is: 95,603.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,772.98 : 99,652.50 = 64,060.20 : x
  2. Step 2: Convert to fraction form
    66,772.98/99,652.50 = 64,060.20/x
  3. Step 3: Cross multiply
    66,772.98x = 99,652.50 × 64,060.20
  4. Step 4: Simplify right side
    66,772.98x = 6,383,759,080.50
  5. Step 5: Solve for x
    x = 6,383,759,080.50/66,772.98
  6. Step 6: Final answer
    x = 95,603.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.