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Finding the Fourth Proportional to 104,638.92, 144,402.06 and 56,892.12

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Solution

The fourth proportional to 104,638.92, 144,402.06 and 56,892.12 is: 78,511.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,638.92 : 144,402.06 = 56,892.12 : x
  2. Step 2: Convert to fraction form
    104,638.92/144,402.06 = 56,892.12/x
  3. Step 3: Cross multiply
    104,638.92x = 144,402.06 × 56,892.12
  4. Step 4: Simplify right side
    104,638.92x = 8,215,339,325.77
  5. Step 5: Solve for x
    x = 8,215,339,325.77/104,638.92
  6. Step 6: Final answer
    x = 78,511.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.