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Finding the Fourth Proportional to 66,582.56, 91,920.84 and 45,392.96

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Solution

The fourth proportional to 66,582.56, 91,920.84 and 45,392.96 is: 62,667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,582.56 : 91,920.84 = 45,392.96 : x
  2. Step 2: Convert to fraction form
    66,582.56/91,920.84 = 45,392.96/x
  3. Step 3: Cross multiply
    66,582.56x = 91,920.84 × 45,392.96
  4. Step 4: Simplify right side
    66,582.56x = 4,172,559,013.29
  5. Step 5: Solve for x
    x = 4,172,559,013.29/66,582.56
  6. Step 6: Final answer
    x = 62,667.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.