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Finding the Fourth Proportional to 141,393.40, 212,017.20 and 52,601.20

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Solution

The fourth proportional to 141,393.40, 212,017.20 and 52,601.20 is: 78,874.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,393.40 : 212,017.20 = 52,601.20 : x
  2. Step 2: Convert to fraction form
    141,393.40/212,017.20 = 52,601.20/x
  3. Step 3: Cross multiply
    141,393.40x = 212,017.20 × 52,601.20
  4. Step 4: Simplify right side
    141,393.40x = 11,152,359,140.64
  5. Step 5: Solve for x
    x = 11,152,359,140.64/141,393.40
  6. Step 6: Final answer
    x = 78,874.68

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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.