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Finding the Fourth Proportional to 141,813.79, 212,760.15 and 61,858.75

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Solution

The fourth proportional to 141,813.79, 212,760.15 and 61,858.75 is: 92,805.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,813.79 : 212,760.15 = 61,858.75 : x
  2. Step 2: Convert to fraction form
    141,813.79/212,760.15 = 61,858.75/x
  3. Step 3: Cross multiply
    141,813.79x = 212,760.15 × 61,858.75
  4. Step 4: Simplify right side
    141,813.79x = 13,161,076,928.81
  5. Step 5: Solve for x
    x = 13,161,076,928.81/141,813.79
  6. Step 6: Final answer
    x = 92,805.34

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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.