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Finding the Fourth Proportional to 141,877.46, 212,878.88 and 74,393.38

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Solution

The fourth proportional to 141,877.46, 212,878.88 and 74,393.38 is: 111,622.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,877.46 : 212,878.88 = 74,393.38 : x
  2. Step 2: Convert to fraction form
    141,877.46/212,878.88 = 74,393.38/x
  3. Step 3: Cross multiply
    141,877.46x = 212,878.88 × 74,393.38
  4. Step 4: Simplify right side
    141,877.46x = 15,836,779,413.81
  5. Step 5: Solve for x
    x = 15,836,779,413.81/141,877.46
  6. Step 6: Final answer
    x = 111,622.94

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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.