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Finding the Fourth Proportional to 66,182.64, 99,218.13 and 28,714.47

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Solution

The fourth proportional to 66,182.64, 99,218.13 and 28,714.47 is: 43,047.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,182.64 : 99,218.13 = 28,714.47 : x
  2. Step 2: Convert to fraction form
    66,182.64/99,218.13 = 28,714.47/x
  3. Step 3: Cross multiply
    66,182.64x = 99,218.13 × 28,714.47
  4. Step 4: Simplify right side
    66,182.64x = 2,848,996,017.34
  5. Step 5: Solve for x
    x = 2,848,996,017.34/66,182.64
  6. Step 6: Final answer
    x = 43,047.48

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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.