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Finding the Fourth Proportional to 66,402.83, 99,440.21 and 49,495.29

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Solution

The fourth proportional to 66,402.83, 99,440.21 and 49,495.29 is: 74,120.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,402.83 : 99,440.21 = 49,495.29 : x
  2. Step 2: Convert to fraction form
    66,402.83/99,440.21 = 49,495.29/x
  3. Step 3: Cross multiply
    66,402.83x = 99,440.21 × 49,495.29
  4. Step 4: Simplify right side
    66,402.83x = 4,921,822,155.35
  5. Step 5: Solve for x
    x = 4,921,822,155.35/66,402.83
  6. Step 6: Final answer
    x = 74,120.67

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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.