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Finding the Fourth Proportional to 141,999.34, 212,962.52 and 42,135.92

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Solution

The fourth proportional to 141,999.34, 212,962.52 and 42,135.92 is: 63,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,999.34 : 212,962.52 = 42,135.92 : x
  2. Step 2: Convert to fraction form
    141,999.34/212,962.52 = 42,135.92/x
  3. Step 3: Cross multiply
    141,999.34x = 212,962.52 × 42,135.92
  4. Step 4: Simplify right side
    141,999.34x = 8,973,371,705.72
  5. Step 5: Solve for x
    x = 8,973,371,705.72/141,999.34
  6. Step 6: Final answer
    x = 63,193.05

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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.