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Finding the Fourth Proportional to 72,350.22, 108,393.90 and 70,775.58

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Solution

The fourth proportional to 72,350.22, 108,393.90 and 70,775.58 is: 106,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,350.22 : 108,393.90 = 70,775.58 : x
  2. Step 2: Convert to fraction form
    72,350.22/108,393.90 = 70,775.58/x
  3. Step 3: Cross multiply
    72,350.22x = 108,393.90 × 70,775.58
  4. Step 4: Simplify right side
    72,350.22x = 7,671,641,140.96
  5. Step 5: Solve for x
    x = 7,671,641,140.96/72,350.22
  6. Step 6: Final answer
    x = 106,034.80

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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.