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Finding the Fourth Proportional to 76,019.60, 113,899.80 and 62,800.40

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Solution

The fourth proportional to 76,019.60, 113,899.80 and 62,800.40 is: 94,093.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,019.60 : 113,899.80 = 62,800.40 : x
  2. Step 2: Convert to fraction form
    76,019.60/113,899.80 = 62,800.40/x
  3. Step 3: Cross multiply
    76,019.60x = 113,899.80 × 62,800.40
  4. Step 4: Simplify right side
    76,019.60x = 7,152,952,999.92
  5. Step 5: Solve for x
    x = 7,152,952,999.92/76,019.60
  6. Step 6: Final answer
    x = 94,093.54

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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.