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Finding the Fourth Proportional to 141,888.09, 212,894.82 and 74,404.02

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Solution

The fourth proportional to 141,888.09, 212,894.82 and 74,404.02 is: 111,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,888.09 : 212,894.82 = 74,404.02 : x
  2. Step 2: Convert to fraction form
    141,888.09/212,894.82 = 74,404.02/x
  3. Step 3: Cross multiply
    141,888.09x = 212,894.82 × 74,404.02
  4. Step 4: Simplify right side
    141,888.09x = 15,840,230,445.18
  5. Step 5: Solve for x
    x = 15,840,230,445.18/141,888.09
  6. Step 6: Final answer
    x = 111,638.90

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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.