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Finding the Fourth Proportional to 141,353.90, 212,128.05 and 58,247.90

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Solution

The fourth proportional to 141,353.90, 212,128.05 and 58,247.90 is: 87,411.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,353.90 : 212,128.05 = 58,247.90 : x
  2. Step 2: Convert to fraction form
    141,353.90/212,128.05 = 58,247.90/x
  3. Step 3: Cross multiply
    141,353.90x = 212,128.05 × 58,247.90
  4. Step 4: Simplify right side
    141,353.90x = 12,356,013,443.60
  5. Step 5: Solve for x
    x = 12,356,013,443.60/141,353.90
  6. Step 6: Final answer
    x = 87,411.90

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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.