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Finding the Fourth Proportional to 141,830.40, 212,745.60 and 58,724.40

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Solution

The fourth proportional to 141,830.40, 212,745.60 and 58,724.40 is: 88,086.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,830.40 : 212,745.60 = 58,724.40 : x
  2. Step 2: Convert to fraction form
    141,830.40/212,745.60 = 58,724.40/x
  3. Step 3: Cross multiply
    141,830.40x = 212,745.60 × 58,724.40
  4. Step 4: Simplify right side
    141,830.40x = 12,493,357,712.64
  5. Step 5: Solve for x
    x = 12,493,357,712.64/141,830.40
  6. Step 6: Final answer
    x = 88,086.60

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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.