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Finding the Fourth Proportional to 66,034.98, 99,048.96 and 21,655.89

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Solution

The fourth proportional to 66,034.98, 99,048.96 and 21,655.89 is: 32,482.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,034.98 : 99,048.96 = 21,655.89 : x
  2. Step 2: Convert to fraction form
    66,034.98/99,048.96 = 21,655.89/x
  3. Step 3: Cross multiply
    66,034.98x = 99,048.96 × 21,655.89
  4. Step 4: Simplify right side
    66,034.98x = 2,144,993,382.37
  5. Step 5: Solve for x
    x = 2,144,993,382.37/66,034.98
  6. Step 6: Final answer
    x = 32,482.68

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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.