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Finding the Fourth Proportional to 66,641.94, 99,948.15 and 19,246.71

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Solution

The fourth proportional to 66,641.94, 99,948.15 and 19,246.71 is: 28,865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,641.94 : 99,948.15 = 19,246.71 : x
  2. Step 2: Convert to fraction form
    66,641.94/99,948.15 = 19,246.71/x
  3. Step 3: Cross multiply
    66,641.94x = 99,948.15 × 19,246.71
  4. Step 4: Simplify right side
    66,641.94x = 1,923,673,058.09
  5. Step 5: Solve for x
    x = 1,923,673,058.09/66,641.94
  6. Step 6: Final answer
    x = 28,865.80

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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.