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Finding the Fourth Proportional to 66,295.14, 99,442.71 and 54,583.76

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Solution

The fourth proportional to 66,295.14, 99,442.71 and 54,583.76 is: 81,875.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,295.14 : 99,442.71 = 54,583.76 : x
  2. Step 2: Convert to fraction form
    66,295.14/99,442.71 = 54,583.76/x
  3. Step 3: Cross multiply
    66,295.14x = 99,442.71 × 54,583.76
  4. Step 4: Simplify right side
    66,295.14x = 5,427,956,519.18
  5. Step 5: Solve for x
    x = 5,427,956,519.18/66,295.14
  6. Step 6: Final answer
    x = 81,875.63

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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.