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Finding the Fourth Proportional to 66,283.96, 99,425.96 and 54,572.58

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Solution

The fourth proportional to 66,283.96, 99,425.96 and 54,572.58 is: 81,858.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,283.96 : 99,425.96 = 54,572.58 : x
  2. Step 2: Convert to fraction form
    66,283.96/99,425.96 = 54,572.58/x
  3. Step 3: Cross multiply
    66,283.96x = 99,425.96 × 54,572.58
  4. Step 4: Simplify right side
    66,283.96x = 5,425,931,156.18
  5. Step 5: Solve for x
    x = 5,425,931,156.18/66,283.96
  6. Step 6: Final answer
    x = 81,858.89

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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.