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Finding the Fourth Proportional to 66,064.92, 99,112.51 and 28,631.27

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Solution

The fourth proportional to 66,064.92, 99,112.51 and 28,631.27 is: 42,953.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,064.92 : 99,112.51 = 28,631.27 : x
  2. Step 2: Convert to fraction form
    66,064.92/99,112.51 = 28,631.27/x
  3. Step 3: Cross multiply
    66,064.92x = 99,112.51 × 28,631.27
  4. Step 4: Simplify right side
    66,064.92x = 2,837,717,034.19
  5. Step 5: Solve for x
    x = 2,837,717,034.19/66,064.92
  6. Step 6: Final answer
    x = 42,953.46

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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.