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Finding the Fourth Proportional to 66,435.87, 99,624.93 and 19,040.52

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Solution

The fourth proportional to 66,435.87, 99,624.93 and 19,040.52 is: 28,552.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,435.87 : 99,624.93 = 19,040.52 : x
  2. Step 2: Convert to fraction form
    66,435.87/99,624.93 = 19,040.52/x
  3. Step 3: Cross multiply
    66,435.87x = 99,624.93 × 19,040.52
  4. Step 4: Simplify right side
    66,435.87x = 1,896,910,472.16
  5. Step 5: Solve for x
    x = 1,896,910,472.16/66,435.87
  6. Step 6: Final answer
    x = 28,552.50

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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.