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Finding the Fourth Proportional to 141,899.40, 212,751.90 and 67,055.40

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Solution

The fourth proportional to 141,899.40, 212,751.90 and 67,055.40 is: 100,537.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,899.40 : 212,751.90 = 67,055.40 : x
  2. Step 2: Convert to fraction form
    141,899.40/212,751.90 = 67,055.40/x
  3. Step 3: Cross multiply
    141,899.40x = 212,751.90 × 67,055.40
  4. Step 4: Simplify right side
    141,899.40x = 14,266,163,755.26
  5. Step 5: Solve for x
    x = 14,266,163,755.26/141,899.40
  6. Step 6: Final answer
    x = 100,537.17

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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.